Changes since v3:

* Ensure the forward compatibility of the old
  configuration (uploadpack.blobpackfileuri).
* Reimplementation of the commit object exclusion method (without rely
  on the "--in-commit-order" arg).
* Extend `show_object` function.
* Remove `exclude_until_next_commit` var in pack-objects.c (Concurrency
  issues).
* Restore the definition of want_object_in_pack method (problems caused
  by the new "type" parameter)

Teng Long (3):
  packfile-uris: support for excluding commit objects
  t5702: support for excluding commit objects
  packfile-uri.txt: support for excluding commit objects

 Documentation/technical/packfile-uri.txt |  20 +--
 builtin/describe.c                       |   4 +-
 builtin/pack-objects.c                   |  97 +++++++------
 builtin/rev-list.c                       |   2 +-
 fetch-pack.c                             |   6 +
 list-objects.c                           |  37 ++---
 list-objects.h                           |   2 +-
 object.c                                 |  15 +-
 object.h                                 |   4 +
 pack-bitmap.c                            |   8 +-
 reachable.c                              |   8 +-
 revision.c                               |  36 +++--
 revision.h                               |   4 +
 t/t5702-protocol-v2.sh                   | 166 ++++++++++++++++++-----
 upload-pack.c                            |   7 +
 15 files changed, 291 insertions(+), 125 deletions(-)

Range-diff against v2:
-:  ---------- > 1:  91dce385f6 packfile-uris: support for excluding commit objects
-:  ---------- > 2:  92def8c72b t5702: support for excluding commit objects
-:  ---------- > 3:  01ab2cbb34 packfile-uri.txt: support for excluding commit objects
-- 
2.31.1.443.g55c63af4c9.dirty