[BUG?] git log picks up bad commit

[Tilman Sauerbeck <tilman@code-monkey.de>]

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Hi,
I think I either found a bug in git log, or I'm working with a broken
repository. I can reproduce this with current git master.

I'm trying to list the last n commits since a given commit on a given
branch like this:
  git log -n N commit.. branch
The problem is, if there are less than N commits that match the
criteria, git log also prints the very first commit of the repository.

I'm operating on a bare repository here. When I actually check out the
branch I'm interested in, git log behaves as expected.

I've uploaded the .git directory to
http://crux.nu/~tilman/broken_repo.tar.bz2 (use -C to extract!)

Reproduce like this:
mkdir /tmp/blah
cd /tmp/blah
tar xjf broken_repo.tar.bz2

git log -n 3 --abbrev-commit --pretty=oneline \
1dd567d596b072e3ce44ea5ad8c373871686b078.. 2.4

The output I'm getting is:

47f585a... syslinux: Updated 3.54 -> 3.60
b3444e1... lzma: 4.32.4 -> 4.32.5
d5d6fa1... Created repository

When I check out the "2.4" branch and run the git log command again, I
get the expected output:

47f585a... syslinux: Updated 3.54 -> 3.60
b3444e1... lzma: 4.32.4 -> 4.32.5

Any idea on what's going on there?

Thanks,
Tilman

-- 
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