Re: Cloning empty repository uses locally configured default branch name

Jonathan Tan [off-list ref] writes:

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A small issue is that upload-pack protocol v0 doesn't even write the
blank ref line ("000...000 capabilities^{}") if HEAD points to an unborn
branch, but that can be fixed as in the patch below.

I think the codepaths we have today in process_capabilities() and
process_dummy_ref() (both in connect.c) would do the right thing
when it sees a blank ref line even when nothing gets transported,
but I smell that the rewrite of this state machine is fairly recent
(say in the past few years) and I do not offhand know if clients
before the rewrite of the state machine (say in v2.18.0) would be OK
with the change.  It should be easy to check, though.

Yes - I backported my patch to v2.17.0 and it works:

I wouldn't be surprised if other reimplementations of Git (like
jgit, libgit2 and Go or Python or whatever your favorite language)
barfs, though.