handle git

# This is a sha256 version of gitrepo1.txt (which uses sha1 hashes)
env GIT_AUTHOR_NAME='David Finkel'
env GIT_AUTHOR_EMAIL='david.finkel@gmail.com'
env GIT_COMMITTER_NAME=$GIT_AUTHOR_NAME
env GIT_COMMITTER_EMAIL=$GIT_AUTHOR_EMAIL

git init --object-format=sha256

at 2018-04-17T15:43:22-04:00
unquote ''
cp stdout README
git add README
git commit -a -m 'empty README'
git branch -m main
git tag v1.2.3

at 2018-04-17T15:45:48-04:00
git branch v2
git checkout v2
echo 'v2'
cp stdout v2
git add v2
git commit -a -m 'v2'
git tag v2.3
git tag v2.0.1
git branch v2.3.4

at 2018-04-17T16:00:19-04:00
echo 'intermediate'
cp stdout foo.txt
git add foo.txt
git commit -a -m 'intermediate'

at 2018-04-17T16:00:32-04:00
echo 'another'
cp stdout another.txt
git add another.txt
git commit -a -m 'another'
git tag v2.0.2

at 2018-04-17T16:16:52-04:00
git checkout main
git branch v3
git checkout v3
mkdir v3/sub/dir
echo 'v3/sub/dir/file'
cp stdout v3/sub/dir/file.txt
git add v3
git commit -a -m 'add v3/sub/dir/file.txt'

at 2018-04-17T22:23:00-04:00
git checkout main
git tag -a v1.2.4-annotated -m 'v1.2.4-annotated'

git show-ref --tags --heads
cmp stdout .git-refs

-- .git-refs --
47b8b51b2a2d9d5caa3d460096c4e01f05700ce3a9390deb54400bd508214c5c refs/heads/main
1401e4e1fdb4169b51d44a1ff62af63ccc708bf5c12d15051268b51bbb6cbd82 refs/heads/v2
b7550fd9d2129c724c39ae0536e8b2fae4364d8c82bb8b0880c9b71f67295d09 refs/heads/v2.3.4
c2a5bbdbeb8b2c82e819a4af94ea59f7d67faeb6df7cb4907c3f0d70836a977b refs/heads/v3
47b8b51b2a2d9d5caa3d460096c4e01f05700ce3a9390deb54400bd508214c5c refs/tags/v1.2.3
f88263be2704531e0f664784b66c2f84dea6d0dc4231cf9c6be482af0400c607 refs/tags/v1.2.4-annotated
b7550fd9d2129c724c39ae0536e8b2fae4364d8c82bb8b0880c9b71f67295d09 refs/tags/v2.0.1
1401e4e1fdb4169b51d44a1ff62af63ccc708bf5c12d15051268b51bbb6cbd82 refs/tags/v2.0.2
b7550fd9d2129c724c39ae0536e8b2fae4364d8c82bb8b0880c9b71f67295d09 refs/tags/v2.3