What's cooking in git.git (Sep 2026, #06)

Here are the topics that have been cooking in my tree.  Commits
prefixed with '+' are in 'next' (being in 'next' is a sign that a
topic is stable enough to be used and is a candidate to be in a
future release).  Commits prefixed with '-' are only in 'seen', and
aren't considered "accepted" at all.  They may be annotated with a URL
to a message that raises issues but they are by no means exhaustive.
A topic without enough support may be discarded after a long period
of no activity (of course, it can be resubmitted when new interest
arises).

Git 2.56-rc0 has been tagged.  We have about 80 non-merge commits
on 'next' and 228 non-merge commits on 'seen'.  We want some of
them in Git 2.56 final, but most of them will either cook in 'next'
until then or be discarded to be sent afresh in a polished form
after 2.56 final is tagged.

Copies of the source code to Git live in many repositories, and the
following is a list of the ones I push into or their mirrors.  Some
repositories have only a subset of branches.

With maint, master, next, seen, todo:

	git://git.kernel.org/pub/scm/git/git.git/
	git://repo.or.cz/alt-git.git/
	https://kernel.googlesource.com/pub/scm/git/git/
	https://github.com/git/git/
	https://gitlab.com/git-scm/git/

With all the integration branches and topics broken out:

	https://github.com/gitster/git/

Even though the preformatted documentation in HTML and man format
are not sources, they are published in these repositories for
convenience (replace "htmldocs" with "manpages" for the manual
pages):

	git://git.kernel.org/pub/scm/git/git-htmldocs.git/
	https://github.com/gitster/git-htmldocs.git/

Release tarballs are available at:

	https://www.kernel.org/pub/software/scm/git/

--------------------------------------------------
[Graduated to 'master']

* as/cherry-pick-no-commit-doc (2026-09-05) 2 commits
  (merged to 'next' on 2026-09-09 at 2b9226bbc0)
 + doc: cherry-pick: note --no-commit skips CHERRY_PICK_HEAD
 + t3507: check no CHERRY_PICK_HEAD after conflicting --no-commit

 The documentation for 'git cherry-pick' has been updated to clarify
 that the '--no-commit' option intentionally skips setting the
 'CHERRY_PICK_HEAD' ref.  A test has also been added to ensure this
 behavior holds even when the operation stops for conflicts.

 Graduated to 'master'.
 source: [ref]


* bc/maintenance-doc-markup-fix-for-asciidoc (2026-09-09) 1 commit
  (merged to 'next' on 2026-09-11 at 9a68d8efd6)
 + doc: fix conjoined maintenance strategies in git-config(1)

 Mark-up fix for 'git maintenance' documentation pages.

 Graduated to 'master'.
 cf. [ref]
 source: [ref]


* en/no-amend-during-conflicts (2026-09-01) 5 commits
  (merged to 'next' on 2026-09-07 at e1faacbfe1)
 + commit: refuse partial commits during conflict resolution
 + commit: refuse to amend during conflict resolution
 + commit: reword the empty-commit rebase amend error
 + commit: allow a partial commit when a rebase pick becomes empty
 + commit: clarify FROM_REBASE_PICK and is_from_rebase() names

 Teach 'am', 'revert', and 'rebase' that running 'commit --amend' or a
 partial 'commit <paths>' makes no sense during operations that stop
 and return control to the user to resolve conflicts left in the
 working tree, just like 'cherry-pick' and 'merge' do.

 Graduated to 'master'.
 cf. [ref]
 cf. [ref]
 cf. <xmqqqzji5id2.fsf@gitster.g>
 source: [ref]


* jc/history-missing-tree-errorfix (2026-09-02) 1 commit
  (merged to 'next' on 2026-09-10 at 36601bf096)
 + history: do not dereference NULL when parent tree is missing

 Running "git history" in a corrupt repository can (unsurprisingly)
 segfault when a necessary tree object is not found.

 Graduated to 'master'.
 cf. [ref]
 source: [ref]


* jc/pathspec-match-const (2026-09-03) 1 commit
  (merged to 'next' on 2026-09-07 at 5a00749668)
 + pathspec: match and original in pathspec_item are const
 (this branch is used by yt/pathspec-negative-prefix.)

 Two members in "struct pathspec_item" were of type "char *", but
 nobody updated the string through these pointers.  They have been
 made "const char *" instead.

 Graduated to 'master'.
 cf. [ref]
 source: <xmqqy0dib3ue.fsf_-_@gitster.g>


* jk/ci-use-system-asciidoctor (2026-09-02) 1 commit
  (merged to 'next' on 2026-09-11 at 848ec2e5e1)
 + ci: use system asciidoctor

 The CI script to install dependencies for the documentation build
 has been updated to install asciidoctor directly via the system
 package manager instead of pinning to an older version via gem.
 Additionally, an obsolete variable used for retired Azure Pipelines
 environments has been removed.

 Graduated to 'master'.
 source: [ref]


* jk/submodule-error-leak (2026-09-01) 2 commits
  (merged to 'next' on 2026-09-07 at d3bf064487)
 + submodule--helper: free URL when repository setup fails
 + repository: make repo_clear() idempotent

 The error path in 'git submodule--helper' has been updated to plug a
 memory leak when a repository handle could not be obtained,
 leveraging an updated idempotent repo_clear().

 Graduated to 'master'.
 cf. [ref]
 source: [ref]


* kh/doc-datamodel (2026-09-05) 4 commits
  (merged to 'next' on 2026-09-09 at b951b38ff5)
 + doc: datamodel: link to the glossary
 + doc: glossary: link four of the terms to gitdatamodel(7)
 + doc: git: link to the gitdatamodel(7) tutorial
 + doc: git: list gitdatamodel(7) as a concept guide
 (this branch is used by ta/command-list-guides-sync-lint.)

 The gitdatamodel documentation page has been linked from a handful
 of key documentaiton pages.

 Graduated to 'master'.
 cf. [ref]
 source: [ref]


* ta/lint-gitlink-older-perl-fix (2026-09-07) 1 commit
  (merged to 'next' on 2026-09-10 at 4ca90b4922)
 + lint-gitlink: don't use empty lower bound in .{0,8}

 The development helper script to lint gitlink references in the
 documentation has been updated to avoid a newer Perl regular
 expression syntax that breaks on older Perl versions.

 Graduated to 'master'.
 cf. <xmqqo6e8za5e.fsf@gitster.g>
 source: [ref]


* tn/fetch-pack-trace-packfile-uri (2026-07-26) 1 commit
  (merged to 'next' on 2026-09-08 at dd3c024f52)
 + fetch-pack: trace packfile URI downloads

 The process of downloading packfile URIs in protocol v2 has been
 instrumented with a Trace2 region.  This visibility allows tracking
 the cumulative time spent downloading external packs and the number
 of advertised URIs without emitting a separate event per pack.

 Graduated to 'master'.
 cf. [ref]
 source: [ref]

--------------------------------------------------
[New Topics]

* hn/range-diff-matched-only (2026-09-11) 1 commit
 - range-diff: add --matched-only to skip one-sided commits

 The 'git range-diff' command has been augmented with a
 '--matched-only' option to skip commits that are only present on
 one side, allowing users to easily focus on only the commits that
 have been retained.

 Waiting for response.
 cf. <xmqqo6dz6bdw.fsf@gitster.g>
 source: [ref]


* jc/cocci-free-updates (2026-09-11) 2 commits
 - cocci: FREE_AND_NULL(E) is safe to call on NULL
 - cocci: remove risky "if (!E) free(E)" conversion

 Updates to Coccinelle semantic patches to correctly handle the
 'FREE_AND_NULL()' macro and avoid generating broken transformations
 for negated pointer checks.

 Will merge to 'next'?
 cf. [ref]
 source: <xmqqld978mok.fsf@gitster.g>
 source: <xmqqh5jv8m4w.fsf@gitster.g>


* js/rust-in-windows-ci (2026-09-13) 2 commits
  (merged to 'next' on 2026-09-13 at fb3c42e1d9)
 + ci(windows): build with Rust
 + rust: pick a GCC-compatible Cargo target under MSYS2/MinGW

 Update Windows CI build to support Rust.

 Will merge to 'master'.
 cf. <xmqq33vc932l.fsf@gitster.g>
 source: [ref]


* js/mingw-test-fixes-around-perl (2026-09-13) 2 commits
  (merged to 'next' on 2026-09-13 at c797ae17e4)
 + t9129: skip UTF-8 tests on Windows
 + t9700: accommodate for MSYS2 Perl reporting as `cygwin`

 Correct tests that depend on Perl running on MinGW

 Will merge to 'master'.
 source: [ref]


* js/win-cmake-use-ucrt64 (2026-09-13) 1 commit
  (merged to 'next' on 2026-09-13 at eab79407f2)
 + cmake(windows): accommodate for Git for Windows' migration to UCRT64

 Windows build switches from MINGW64 to URCR64 runtime starting Git
 2.56.0; switch the cmake based build at the same time.

 Will merge to 'master'.
 source: [ref]


* jt/object-file-batch-fsync-fix (2026-09-13) 2 commits
 - object-file: flush transaction packfile before migrating objects
 - object-file: lift ODB reprepare out of packfile flush

 When 'core.fsyncMethod' is set to 'batch', the ODB transaction
 failed to properly flush large blob packfiles residing in the
 temporary directory before migrating the directory's contents to the
 main object store.  The execution sequence has been corrected by
 performing the packfile flush before the temporary directory
 migration, averting failure.

 Needs review.
 source: [ref]


* ak/refs-files-root-ref-lock (2026-09-11) 1 commit
 - refs/files: avoid packed-refs lock for root ref deletion

 The files backend has been updated to avoid unconditionally locking
 the 'packed-refs' file when deleting a root ref (which are never
 packed).

 Will merge to 'next'?
 cf. [ref]
 source: [ref]


* tb/rerere-wait-for-merge-rr-lock (2026-09-14) 2 commits
 - rerere: go on at a conflict when the lock stays busy
 - rerere: wait for MERGE_RR.lock, and let the gc skip it

 Instead of failing to record conflicts to be resolved immediately,
 wait while "rerere gc" is ongoing.

 Needs review.
 source: [ref]


* tz/doc-pack-refs-and-refs-fixes (2026-09-14) 2 commits
 - doc/refs: backtick-quote commands and options consistently
 - doc/pack-refs: convert synopsis and options to new style

 Doc updates.

 Expecting a reroll.
 cf. [ref]
 source: [ref]

--------------------------------------------------
[Cooking]

* pp/midx-write-skip-empty (2026-09-08) 1 commit
 - midx-write: skip writes with no object entries

 The `git multi-pack-index write` command has been updated to
 silently return success when there are no object entries to index.
 This avoids writing empty `multi-pack-index` layers, which
 previously caused subsequent incremental midx writes using the
 `--bitmap` option to fail when attempting to load the missing
 reverse index.

 Waiting for response.
 cf. <aqAkfGZtLJ97nG1m@com-79390>
 source: [ref]


* jk/merge-ll-tempfile-cleanup (2026-09-11) 3 commits
 - merge-ll: use tempfile API for external driver files
 - merge-ll: catch close() errors when writing external tempfiles
 - merge-ll: use strbuf to read back external merge result

 The external merge driver in 'git merge' now uses the tempfile API
 to create its temporary files.  This ensures that these temporaries
 are reliably cleaned up even when the merge driver or its parent Git
 process is terminated abruptly.

 Waiting for response.
 cf. [ref]
 source: [ref]


* vm/advice-config-global-hint (2026-09-10) 4 commits
 . fixup! advice: introduce advice scoping mechanism
 . advice: use global config for default branch name
 . advice: introduce advice scoping mechanism
 . advice: pass the entire advice_setting to vadvise()

 Some advice messages would never trigger once a repository is
 initialized (e.g., advice.defaultBranchName).  Update hint to
 disable them in per-user configuration file.

 Waiting for response.
 cf. [ref]
 cf. <xmqqzexpf78k.fsf@gitster.g>
 cf. <xmqq8q55863e.fsf@gitster.g>
 source: [ref]


* jc/rust-cargo-build-target (2026-09-10) 1 commit
 - rust: respect CARGO_BUILD_TARGET when locating build output

 When cross-compiling with Cargo, the output artifact is placed in a
 target-specific subdirectory, which causes the build system to fail
 to locate it.  The build system has been updated to respect the
 'CARGO_BUILD_TARGET' environment variable.

 Will merge to 'next'?
 source: [ref]


* mh/rust-crate-subdir (2026-09-10) 1 commit
 . Move rust gitcore crate to a different subdirectory

 The Rust code and its 'Cargo.toml' file have been moved from the
 top-level repository root and 'src/' directory into a dedicated
 'rust/' subdirectory.  This avoids confusing Cargo's packaging
 mechanism when the Git repository is included as a submodule in
 other Rust projects.

 Needs review (Broken???)
 cf. <xmqq5x0df19l.fsf@gitster.g>
 source: [ref]


* ps/ref-storage-format (2026-09-09) 13 commits
 - setup: allow "--ref-storage-format=" to specify a payload
 - setup: rename "init.defaultRefFormat" to "init.defaultRefStorageFormat"
 - t: rename GIT_TEST_DEFAULT_REF_FORMAT
 - setup: rename ref storage format environment variables
 - setup: refactor how we configure the ref storage format
 - refs: expose function to parse reference URIs
 - help: rename "default-ref-format" to "default-ref-storage-format"
 - builtin/rev-parse: rename "--show-ref-format" to "--show-ref-storage-format"
 - builtin/submodule: rename "--ref-format=" to "--ref-storage-format="
 - builtin/refs: rename "--ref-format=" to "--ref-storage-format="
 - builtin/clone: rename "--ref-format=" to "--ref-storage-format="
 - builtin/init: rename "--ref-format=" to "--ref-storage-format="
 - parse-options: allow for hidden aliases

 The terminology regarding reference storage formats has been unified
 across command-line options, environment variables, configuration
 variables, and source code, standardizing on the phrase "ref storage
 format" (e.g., `--ref-storage-format`, `'GIT_REF_STORAGE_FORMAT'`).
 Additionally, the `--ref-storage-format` option has been updated to
 accept payloads in the form `<format>://<payload>`.

 Will merge to 'next'?
 cf. <xmqqjyon6b4y.fsf@gitster.g>
 cf. [ref]
 source: [ref]


* ta/command-list-guides-sync-lint (2026-09-10) 2 commits
 - lint-docs: check the guide list in command-list.txt
 - command-list.txt: add gitformat-loose(5) and gitpacking(7)
 - Merge branch 'kh/doc-datamodel' into ta/command-list-guides-sync-lint

 A new linter test has been added to Documentation/lint-manpages.sh
 to ensure that all non-command manual pages (guides and developer
 interfaces) listed in Documentation/Makefile are present in
 command-list.txt, replacing an older comment that reminded
 developers to keep them in sync.

 Needs review.
 cf. <xmqq1pb2s33e.fsf@gitster.g>
 source: [ref]


* ap/var-broken-down-idents (2026-09-09) 1 commit
 - var: support broken-down idents, signing key, multiple args, and -z

 The 'git var' command has been extended to expose individual
 identity components ('GIT_AUTHOR_NAME', etc.) and the commit
 signing key, and can now accept multiple variables to query at
 once, safely formatting the output with a new '-z' option.

 Needs review.
 source: [ref]


* ks/history-commit-leakfix (2026-09-10) 1 commit
 - builtin/history: unuse the commit buffer after use

 Will merge to 'next'?
 cf. [ref]
 cf. <xmqqv78df57r.fsf@gitster.g>
 source: [ref]


* tc/push-force-if-includes-fixes (2026-09-13) 2 commits
 - push: fix --force-if-includes non-branch advice
 - push: check pushed ref for --force-if-includes

 The --force-if-includes protection for git push has been updated to
 consult the reflog of the local branch being pushed, rather than
 incorrectly checking the reflog of a local branch that shares the
 name of the remote destination branch.  The push advice for detached
 HEAD scenarios has also been adjusted to indicate that the remote
 ref cannot be verified locally.

 Waiting for response.
 cf. [ref]
 source: [ref]


* ps/tune-rerere-gc (2026-09-04) 2 commits
  (merged to 'next' on 2026-09-07 at 6524063269)
 + builtin/maintenance: improve heuristic for "rerere gc"
 + rerere: extract logic to determine whether entries are stale

 "git maintenance" triggered "rerere gc" in unappropriate times and
 interfered with "git rebase" etc. too much.  The conditions "rerere
 gc" gets triggered have been tweaked.

 Will merge to 'master'.
 cf. [ref]
 cf. [ref]
 source: [ref]


* as/push-force-if-includes-no-reflog (2026-09-05) 1 commit
 - push: fix --force-if-includes when remote-tracking ref has no reflog

 The timestamp used for checking the reflog of a remote-tracking
 branch during 'git push --force-if-includes' was left uninitialized
 when the reflog was completely empty, which has been corrected.

 Waiting for review.
 cf. <xmqqjyowz9oq.fsf@gitster.g>
 cf. [ref]
 source: [ref]


* tb/rerere-lock-grace (2026-09-09) 3 commits
 - sequencer: disable auto maintenance in spawned commands
 - rebase, cherry-pick, revert: run auto maintenance when done
 - config: add git_config_append_parameter()

 The sequencer machinery (used by 'git rebase', 'git cherry-pick', and
 'git revert') has been updated to defer automatic maintenance tasks
 until the end of the operation, preventing nested 'git commit', 'git
 merge', and 'exec' commands from triggering GC operations that could
 contend for locks or delete open packs while the sequence is in
 progress.

 Expecting a reroll.
 cf. [ref]
 cf. [ref]
 source: [ref]


* cc/lazy-fetch-trusted-bit (2026-09-08) 5 commits
 - builtin/upload-pack: set GIT_NO_LAZY_FETCH to 0 on trusted repo
 - promisor-remote: prevent infinite recursion when lazy fetching
 - upload-pack: read uploadpack.lazyFetchTrusted
 - setup: extract path_allowlist_apply()
 - promisor-remote: factor out lazy_fetch_objects()

 A new 'uploadpack.lazyFetchTrusted' configuration variable has been
 introduced to allow 'upload-pack' to lazily fetch missing objects from
 configured promisor remotes when serving trusted repositories.

 Waiting for response.
 cf. <xmqq7bkvy74h.fsf@gitster.g>
 cf. <xmqqqzj3wr24.fsf@gitster.g>
 cf. <xmqqmrtrwq0k.fsf@gitster.g>
 source: [ref]


* ps/odb-stop-registering-in-memory-sources (2026-09-10) 13 commits
  (merged to 'next' on 2026-09-11 at 77bc48c97c)
 + odb: remove the ability to link sources ad-hoc
 + t/helper: stop registering alternates in "ref-store" command
 + t/helper: adapt read-midx to not link ad-hoc source anymore
 + builtin/multi-pack-index: refuse unknown sources with "--object-dir="
 + odb/packed: fix memory leaks when freeing source
 + tmp-objdir: drop unused function to register alternate
 + odb: remove infrastructure to register submodule sources
 + builtin/grep: stop registering submodule ODB as source
 + submodule-config: stop registering submodule sources
 + submodule-config: stop using `the_hash_algo`
 + submodule-config: remove uses of `the_repository`
 + cache-tree: remove dependency on `the_repository`
 + cache-tree: drop `the_repository` in `cache_tree_fully_valid()`
 + Merge branch 'ty/repository-fetch-if-missing' into ps/ps/odb-stop-registering-in-memory-sources

 The mechanism to register in-memory alternate object sources has
 been removed, as submodule object databases are now accessed
 natively via their own repository structures.  This simplifies
 object database management and prepares the codebase for migrating
 alternate tracking into the files backend.

 Will merge to 'master'.
 source: [ref]


* sa/rev-list-missing-only (2026-09-03) 1 commit
  (merged to 'next' on 2026-09-07 at b21b667619)
 + rev-list: add --missing-only option to filter output

 The git rev-list command has been augmented with a '--missing-only'
 option that filters the output to only show missing objects,
 stripping the leading '?' character and suppressing present objects,
 which is useful when used in combination with '--missing=print' or
 '--missing=print-info'.

 Will merge to 'master'.
 source: [ref]


* wf/imap-send-draft (2026-09-01) 1 commit
  (merged to 'next' on 2026-09-07 at 8a2a1bb827)
 + imap-send: add --draft to set IMAP \Draft flag

 The 'git imap-send' command has been taught to take the '--draft'
 option to mark uploaded messages as drafts, which helps some email
 clients render them properly for editing and sending.

 Will merge to 'master'.
 cf. <xmqq8q5kl4gq.fsf@gitster.g>
 cf. [ref]
 source: <761c3f1b-e280-48b1-a2ad-770b68be3434@slotpi01m90>


* yt/pathspec-negative-prefix (2026-09-14) 2 commits
 - dir: preserve pathspec prefix optimization with leading excludes
 - dir: do not apply prefix to negative pathspecs
 - Merge branch 'jc/pathspec-match-const' into yt/pathspec-negative-prefix

 The pathspec matching logic has been updated to avoid out-of-bounds
 memory accesses when a negative pathspec is shorter than the common
 prefix of positive pathspecs.

 Needs review.
 source: [ref]


* cc/early-scan-options (2026-09-02) 6 commits
 - fast-import: use early_scan_options() for --allow-unsafe-features
 - parse-options: build early scan options from a struct option array
 - parse-options: add parse_options_takes_argument()
 - rev-parse: fix "--" detection when it is an option value
 - bisect: fix "--" detection when a term name is "--"
 - parse-options: add early_scan_options()

 The process of parsing command-line options in commands that
 perform an early scan over their arguments (such as 'git bisect',
 'git rev-parse', and 'git fast-import') has been unified using a
 new early-scan sub-API, which parses and skips known options taking
 separate values to prevent logic bugs.

 Waiting for response.
 cf. <xmqqpkyviizc.fsf@gitster.g>
 source: [ref]


* ec/commit-fixup-options (2026-05-26) 2 commits
 - commit: allow -c/-C for all kinds of --fixup
 - commit: allow -m/-F for all kinds of --fixup

 Support for '-m', '-F', '-c', or '-C' options to supply a commit log
 message from outside the editor has been added for all 'git commit
 --fixup' variations.

 Expecting a reroll.
 cf. [ref]
 source: [ref]


* jc/checkout-refactor (2026-08-30) 8 commits
 - checkout: move post_checkout_hook() to checkout.c
 - checkout: wrap overly long lines
 - checkout: restructure switch, restore, and checkout entrypoints
 - checkout: extract branch setup and tracking helpers
 - checkout: extract option validation and pathspec helpers
 - checkout: validate stage and merge option compatibility in checkout_paths()
 - checkout: validate new branch name in checkout_branch()
 - checkout: pass cb_option explicitly to branch name parsers

 The front-end code for 'git checkout', 'git switch', and 'git
 restore' has been restructured to cleanly separate their pathspec
 and branch handling, eliminating a common bottleneck and paving the
 way to libify utility helpers.

 Waiting for response.
 cf. <xmqqo6el1xz0.fsf@gitster.g>
 cf. <xmqqse3x1y20.fsf@gitster.g>
 source: [ref]


* ll/doc-pushcert-if-asked (2026-08-29) 1 commit
 - doc: remote-helpers: option pushcert if-asked

 he remote helper documentation for the 'pushcert' option has been
 updated to mention that it can also take 'if-asked', reflecting the
 existing implementation in the code.

 Needs review.
 source: [ref]


* ws/squelch-svn-migrate (2026-08-27) 2 commits
 - Makefile: add NO_GIT_SVN knob to skip building/installing git-svn
 - git-svn: don't print v1-layout migration noise when there's nothing to migrate

 Needs review.
 source: [ref]


* dw/config-read-both-global (2026-08-23) 3 commits
 - config: read global scope via config_sequence
 - config: let sequence require a successful file
 - path: use forward slashes in XDG config on Windows

 The git config --global read operations have been updated to respect
 both $HOME/.gitconfig and $XDG_CONFIG_HOME/git/config, fixing an
 inconsistency where only the former was read when both configuration
 files are present.

 Expecting a reroll.
 cf. [ref]
 source: [ref]


* vv/branch-recurse-no-start-ref (2026-08-21) 2 commits
 - branch: allow recursion with no tracking name
 - branch: do not track a start point with no ref

 The --recurse-submodules option in 'git branch' has been fixed to
 avoid a crash when the start point is not a reference (e.g., a raw
 object ID).  The creation path now skips setting up tracking and
 properly forwards the absent tracking name to the submodule helper.

 Needs review.
 source: [ref]


* ps/odb-alternates-at-creation (2026-09-10) 9 commits
 - odb/source: remove the ability to write alternates
 - builtin/clone: write alternates via `odb_create_on_disk()`
 - odb/source: support writing alternates when creating the database
 - builtin/clone: move setup of alternates for non-shared local clones
 - builtin/clone: move setup of alternates for shared local clones
 - builtin/clone: refactor handling of "--reference{,-if-able}"
 - builtin/clone: move around `setup_reference()`
 - builtin/clone: defer setup of the object database
 - setup: split up concerns of `init_db()`
 - Merge branch 'ps/odb-eagerly-load-alternates' into ps/odb-alternates-at-creation

 The setup of alternates has been deferred to object database
 creation time during clone, which drops the unused ad-hoc alternate
 writing API, simplifying the object database backend interface.

 Will merge to 'next'?
 cf. [ref]
 cf. [ref]
 source: [ref]


* ps/odb-pluggable-fsck (2026-09-11) 10 commits
  (merged to 'next' on 2026-09-13 at ea4130138d)
 + builtin/fsck: move loose object verification into the loose source
 + builtin/fsck: move multi-pack index verification into the packed source
 + builtin/fsck: move bitmap verification into the packed source
 + builtin/fsck: move reverse index verification into the packed source
 + builtin/fsck: move packfile verification into the packed source
 + odb: provide infrastructure for pluggable fsck checks
 + builtin/fsck: don't check alternates with "--no-full"
 + builtin/fsck: de-globalize option handling
 + builtin/fsck: merge `fsck_obj_buffer()` and `fsck_obj()`
 + builtin/fsck: use `fsck_obj_buffer()` when checking loose objects
 + Merge branch 'ps/odb-eagerly-load-alternates' into ps/odb-pluggable-fsck
 + Merge branch 'ps/odb-pluggable-pack-generation' into ps/odb-pluggable-fsck

 The consistency checks for the object database (fsck) have been
 decoupled from the generic builtin implementation and moved into the
 backend-specific object source layers, making them pluggable for
 different object storage formats.

 Will merge to 'master'.
 cf. [ref]
 source: [ref]


* as/utimensat-utimes (2026-08-21) 3 commits
 - compat/posix: drop legacy <utime.h> header and shims
 - treewide: use utimensat(2) instead of legacy utime(3p)
 - compat/posix: introduce utimensat(2) wrapper

 The codebase has been updated to use the newer utimensat() POSIX
 function instead of the obsolescent utime(), allowing
 high-precision timestamps while preserving fallback compatibility.

 Waiting for response.
 cf. [ref]
 source: [ref]


* kn/receive-report-hook (2026-09-10) 4 commits
 - hook: introduce the receive-report hook
 - receive-pack: move message generation to separate function
 - receive-pack: drop static variables to track report status version
 - doc: add proc-receive hook info in 'git-receive-pack.adoc'

 A new hook 'report' is added to 'git receive-pack', which runs after
 reference updates and allows the server to filter or modify the
 packet-line status report sent back to the client.

 Will merge to 'next'?
 source: [ref]


* ap/http-preserve-wwwauth-redirect (2026-08-19) 1 commit
 - http: preserve wwwauth_headers across redirects

 When an HTTP request triggers a redirect and the target yields an
 authentication challenge, the WWW-Authenticate headers received
 during the redirect are now explicitly preserved across the
 credential URL update, fixing an issue where they were incorrectly
 cleared.

 Needs review.
 source: [ref]


* kh/format-rev-more-options (2026-08-18) 5 commits
 - format-rev: learn --abbrev, --color, and --date
 - doc: rev-list-options.adoc: factor out --date alts
 - format-rev: factor option variables into a struct
 - format-rev: place BUG calls first in callback
 - format-rev: use lower case for opts description

 The experimental 'git format-rev' has been taught a few more
 formatting options.

 Needs review.
 source: [ref]


* gg/http-ssl-verify-status (2026-08-18) 1 commit
 - http: add http.sslVerifyStatus to check stapled OCSP responses

 The HTTP transport has been taught to check the revocation status of
 the server certificate using the stapled OCSP response during the
 TLS handshake via a new 'http.sslVerifyStatus' configuration
 variable.

 Expecting a reroll.
 cf. [ref]
 source: [ref]


* ty/repo-config-cleanups (2026-08-07) 3 commits
 - environment: remove inaccurate repo_config_values comments
 - environment: clarify repository config getter documentation
 - environment: drop redundant NULL checks in config getters

 Repository configuration getters in 'environment.c' have been
 simplified by removing redundant NULL checks.  The documentation for
 these getters in 'environment.h' has been clarified, and inaccurate
 section comments inside 'struct repo_config_values' have been removed.

 Waiting for response.
 cf. [ref]
 source: [ref]


* dk/use-nsec-runtime (2026-09-11) 3 commits
 - core: convert build-time USE_NSEC into runtime core.useNanosec
 - environment: align repo_config_values_init with struct declaration
 - meson: expose knob for xmlto relative links in manuals

 The build-time knob 'USE_NSEC' for nanosecond stat precision has been
 converted to a runtime configuration 'core.useNanosec', allowing
 distributions to bundle one binary that adapts to filesystem
 capabilities dynamically.

 Will merge to 'next'?
 cf. [ref]
 source: [ref]


* bc/restrict-hex-to-lowercase (2026-09-07) 7 commits
 - hex: allow only lowercase object IDs in breaking changes mode
 - t5324: adjust tests for corrupt commit-graph
 - object-name: use hexval
 - hex: label usages of hex parsing for object IDs
 - hex: make hex_to_bytes accept kind of hex to use
 - hex: allow specifying hex type with hex2chr
 - hex: add functionality for lowercase-only hex

 The parser for hex object names has been updated to reject uppercase
 hexadecimal characters when running in the breaking changes mode, in
 preparation for Git 3.0.

 Needs review.
 source: [ref]


* hn/checkout-m-autostash-refine (2026-09-03) 2 commits
  (merged to 'next' on 2026-09-07 at 1bc4ba5725)
 + checkout: separate autostash conflict advice from branch-switch message
 + stash: reserve exit status 1 for conflicts

 The autostash fallback in 'git checkout -m' has been refined to only
 retry when there are local changes.  Additionally, a blank line now
 visually separates autostash conflict advice from the subsequent
 branch-switch message.

 Will merge to 'master'.
 cf. <xmqq7bl2b1zs.fsf@gitster.g>
 source: [ref]


* kj/repo-info-more-path-keys (2026-09-11) 7 commits
 - repo: add path.cdup
 - repo: add path.git-prefix
 - repo: add path.grafts with absolute and relative suffixes
 - repo: add path.index with absolute and relative suffixes
 - repo: add path.hooks with absolute and relative suffixes
 - repo: add path.superproject-root with absolute and relative suffixes
 - repo: add path.toplevel with absolute and relative suffix formatting

 The 'git repo info' command has been taught more keys to output
 paths of various repository components (such as the working tree
 root, superproject working tree, object database, etc.), supporting
 both absolute and relative path formats.

 Waiting for response.
 cf. <xmqqse3fbudk.fsf@gitster.g>
 cf. <xmqqcxujbser.fsf@gitster.g>
 source: [ref]


* tc/last-modified-bloom (2026-09-01) 6 commits
 - last-modified: keep per-path Bloom filters for wildcard pathspecs
 - last-modified: check pathspec against Bloom filter first
 - revision: add Bloom check that includes parent directories
 - bloom: add helper to check if any key in a vector is present
 - revision: expose check for paths maybe changed in Bloom filter
 - revision: move bloom keyvec precondition into function

 The 'git last-modified' command has been optimized by using Bloom
 filters.  It now reuses revision walk filtering logic from 'git log'
 to pre-filter commits, and maintains per-path Bloom filters even when
 wildcard pathspecs are used.

 Waiting for response.
 cf. [ref]
 cf. [ref]
 source: [ref]


* ds/trace2-tolerate-failed-timestamp (2026-08-31) 7 commits
 - trace2: remove use of xcalloc()
 - trace2: remove use of ALLOC_GROW()
 - trace2: remove use of xstrfmt()
 - trace2: remove use of ALLOC_ARRAY()
 - trace2: remove use of xstrdup()
 - trace2: tolerate failed timestamp formatting
 - banned-die: create header for banning of functions

 Functions like `xstrfmt()` and `xcalloc()` have been banned from use
 in the trace2 API codebase to prevent calls to `die()` which lead to
 unwanted process exits and recursion when memory allocation fails.

 Needs review.
 source: [ref]


* pz/fetch-submodule-errors-config (2026-07-16) 2 commits
 - fetch: add fetch.submoduleErrors to make submodule fetch errors non-fatal
 - submodule: fix premature failure in recursive submodule fetch

 The 'git fetch' command can now configure how submodule fetch errors
 are handled via 'fetch.submoduleErrors' and '--submodule-errors',
 making them non-fatal.  A premature failure during recursive submodule
 fetches has been fixed by deferring the error until the OID-based
 retry phase fails.

 Needs review.
 source: [ref]


* fz/rebase-autosquash-empty (2026-08-27) 1 commit
 - sequencer: honor --empty when a fixup!/squash! empties its target

 A commit that is emptied by melding a 'fixup!' or 'squash!' commit
 during 'git rebase --autosquash' is now handled according to the
 '--empty' option, allowing it to be dropped, kept, or to halt the
 rebase.

 Waiting for response.
 cf. [ref]
 source: [ref]


* mm/lib-httpd-cgi-safe (2026-09-01) 3 commits
  (merged to 'next' on 2026-09-07 at 9ceb1bfd64)
 + t/lib-httpd: document writing concurrency-safe CGI helpers
 + t/lib-httpd: make http-429 first-request check atomic
 + t/lib-httpd: fix apply-one-time-script race under concurrent requests

 CGI helper scripts used by HTTP-related test scripts have been updated
 to use atomic filesystem operations, preventing race conditions when
 Apache handles concurrent requests.

 Will merge to 'master'.
 cf. [ref]
 source: [ref]


* ij/subtree-reject-v2-config (2026-07-06) 2 commits
 - git-subtree: Bail out if we find output from Rust rewrite (test)
 - git-subtree: Bail out if we find output from Rust rewrite

 The shell script implementation of 'git subtree' has been updated to
 check for the presence of the configuration file of the new Rust
 implementation, preventing users from accidentally running the old
 script on repositories already managed by the new tool.

 Expecting a reroll.
 cf. [ref]
 source: [ref]


* mm/line-log-limited-ops (2026-09-02) 7 commits
 - diffcore-pickaxe: limit -G to the -L tracked range
 - diff: support --check with -L line ranges
 - diff: support stat formats with -L
 - diff: extract a line-range diff helper for reuse
 - diff: emit -L hunk headers via xdiff's formatter
 - diff: simplify the line-range filter by classifying removals immediately
 - diff: rename line-range filter struct and clarify fields
 (this branch is used by mm/diff-process-hunks.)

 The 'git log -L<range>:<path>' command has been taught to limit
 various 'diff' operations, such as '--stat', '--check', and '-G', to
 the specified range and path.

 Needs review.
 source: [ref]


* hn/history-squash (2026-09-08) 8 commits
 - history: support editing squashed commit messages
 - history: create squashed commits without editing
 - history: protect branches when squashing a range
 - history: validate squash revision ranges
 - history: add skeleton for squash subcommand
 - sequencer: share the squash message marker helpers and flags
 - history: give commit_tree_ext a message template
 - history: extract helper for a commit's parent tree

 The experimental 'git history' command has been taught a new 'squash'
 subcommand to fold a range of commits into a single commit, with any
 descendants replayed on top.

 Will merge to 'next'?
 cf. <xmqqik4fv4v1.fsf@gitster.g>
 source: [ref]


* tb/midx-incremental-custom-base (2026-06-12) 3 commits
 - midx-write: include packs above custom incremental base
 - midx: pass custom '--base' through incremental writes
 - t5334: expose shared `nth_line()` helper

 The 'git multi-pack-index write --incremental' command has been
 corrected to properly honor the '--base' option.  Previously, the
 custom base was ignored by the normal write path; packs from layers
 above the selected base were incorrectly skipped by the pack exclusion
 logic, and reachability closure for bitmaps was broken.

 Expecting a reroll.
 cf. <an4uIQA09rDCwwBp@com-79390>
 cf. [ref]
 source: [ref]


* mm/diff-process-hunks (2026-08-13) 11 commits
 - fixup! diff: consult oid-only hunk providers via diff.<driver>.process
 - diff: consult oid-only hunk providers via diff.<driver>.process
 - userdiff: add diff.<driver>.process config
 - sub-process: add a gentle status read
 - sub-process: separate process lifecycle from hashmap management
 - blame: read precomputed hunks
 - diff: read precomputed hunks for stat output
 - diff: record precomputed hunks during stat output
 - diff-hunks: add the store format, library, and command
 - diff: introduce a hunk provider interface
 - gitattributes: document how external diff drivers relate to diff features
 - Merge branch 'mm/line-log-limited-ops' into mm/diff-process-hunks
 (this branch uses mm/line-log-limited-ops.)

 A new 'diff.<driver>.process' configuration has been introduced to
 allow a long-running external process to act as a hunk provider,
 enabling external tools to control which lines Git considers changed
 while leaving all output formatting (word diff, color, blame, etc.) to
 Git's standard pipeline.

 Expecting a reroll.
 cf. [ref]
 source: [off-list ref]


* kh/format-patch-range-diff-notes (2026-08-24) 3 commits
 . format-patch: learn --[no-]range-diff-notes
 . revision.h: rename struct member to reflect notes role
 . format-patch: simplify get_notes_arg parameters

 The 'format-patch' command has been updated with options to
 configure notes specifically for range-diff output, allowing them to
 differ from the notes displayed on the patches themselves.

 Expecting a reroll.
 cf. [off-list ref]
 source: [off-list ref]