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c200167426
With two branches getting fetched (master and config), the branch
referenced by FETCH_HEAD is ambiguous. For example, I have:
$ cat FETCH_HEAD
41d7bfa7184cc93c9dac139d1674e9530799e3b0 \
not-for-merge branch 'config' of http://nmbug.tethera.net/git/nmbug-tags
acd379ccb973c45713eee9db177efc530f921954 \
not-for-merge branch 'master' of http://nmbug.tethera.net/git/nmbug-tags
(where I wrapped the line by hand). This means that FETCH_HEAD
references the config branch:
$ git rev-parse FETCH_HEAD
41d7bfa7184cc93c9dac139d1674e9530799e3b0
which breaks all of the FETCH_HEAD logic in nmbug (where FETCH_HEAD is
assumed to point to the master branch).
Instead of relying on FETCH_HEAD, use @{upstream} as the
remote-tracking branch that should be merged/diffed/integrated into
HEAD. @{upstream} was added in Git v1.7.0 (2010-02-12) [1], so
relying on it should be fairly safe. One tricky bit is that bare
repositories don't set upstream tracking branches by default:
$ git clone --bare http://nmbug.tethera.net/git/nmbug-tags.git nmbug-bare
$ cd nmbug-bare
$ git remote show origin
* remote origin
Fetch URL: http://nmbug.tethera.net/git/nmbug-tags.git
Push URL: http://nmbug.tethera.net/git/nmbug-tags.git
HEAD branch: master
Local refs configured for 'git push':
config pushes to config (up to date)
master pushes to master (up to date)
While in a non-bare clone:
$ git clone http://nmbug.tethera.net/git/nmbug-tags.git
$ cd nmbug-tags
$ git remote show origin
* remote origin
Fetch URL: http://nmbug.tethera.net/git/nmbug-tags.git
Push URL: http://nmbug.tethera.net/git/nmbug-tags.git
HEAD branch: master
Remote branches:
config tracked
master tracked
Local branch configured for 'git pull':
master merges with remote master
Local ref configured for 'git push':
master pushes to master (up to date)
From the clone docs [2]:
--bare::
Make a 'bare' Git repository…
Also the branch heads at the remote are copied directly
to corresponding local branch heads, without mapping
them to `refs/remotes/origin/`. When this option is
used, neither remote-tracking branches nor the related
configuration variables are created.
To use @{upstream}, we need to the local vs. remote-tracking
distinction, so this commit adds 'nmbug clone', replacing the
previously suggested --bare clone with a non-bare --no-checkout
--separate-git-dir clone into a temporary work directory. After
which:
$ git rev-parse @{upstream}
acd379ccb973c45713eee9db177efc530f921954
gives us the master-branch commit. Existing nmbug users will have to
run the configuration tweaks and re-fetch by hand. If you don't have
any local commits, you could also blow away your NMBGIT repository and
re-clone from scratch:
$ nmbug clone http://nmbug.tethera.net/git/nmbug-tags.git
Besides removing the ambiguity of FETCH_HEAD, this commit allows users
to configure which upstream branch they want nmbug to track via 'git
config', in case they want to change their upstream repository.
[1]: http://git.kernel.org/cgit/git/git.git/tree/Documentation/RelNotes/1.7.0.txt
[2]: http://git.kernel.org/cgit/git/git.git/tree/Documentation/git-clone.txt
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|---|---|---|
| .. | ||
| nmbug | ||
| gen-testdb.sh | ||
| man-to-mdwn.pl | ||
| news2wiki.pl | ||
| printmimestructure | ||
| release-checks.sh | ||
| RELEASING | ||
| schemata | ||
| STYLE | ||
| TODO | ||
| uncrustify.cfg | ||