Bug: Crash in Repo._load_git_data when .git-blame-ignore-revs does not exist

[rzuckerm]

For older version of git, such as 2.34.1, git blame errors out if .git-blame-ignore-revs does not exist. A crash occurs in repo.py line 271 due to this issue. I guess the reason why this hasn't been an issue is that GitHub seems to be using git 2.39.1.

[rzuckerm]

I think the solution is to touch that file after cloning to be backward compatible with old versions of git. Please assign this to me.

[rzuckerm]

Here are the details of the crash when running the tests:

tests/test_integration.py:3: in <module>
    TEST_REPO = subete.load()
subete/__init__.py:21: in load
    return Repo(source_dir=source_dir)
subete/repo.py:35: in __init__
    self._load_git_data()
subete/repo.py:271: in _load_git_data
    blame = self._git_repo.blame('HEAD', f"{program._path}/{program._file_name}")
venv/lib/python3.7/site-packages/git/repo/base.py:876: in blame
    data = self.git.blame(rev, '--', file, p=True, stdout_as_string=False, **kwargs)
venv/lib/python3.7/site-packages/git/cmd.py:585: in <lambda>
    return lambda *args, **kwargs: self._call_process(name, *args, **kwargs)
venv/lib/python3.7/site-packages/git/cmd.py:1124: in _call_process
    return self.execute(call, **exec_kwargs)
venv/lib/python3.7/site-packages/git/cmd.py:928: in execute
    raise GitCommandError(redacted_command, status, stderr_value, stdout_value)
E   git.exc.GitCommandError: Cmd('git') failed due to: exit code(128)
E     cmdline: git blame -p HEAD -- /tmp/tmp6ouuhm62/archive/a/abap/hello-world.abap
E     stderr: 'fatal: could not open object name list: .git-blame-ignore-revs'

[jrg94]

Really nice catch!