`test_ignored` is failing on `pygit2` backend on Windows.

[skshetry]

Need to investigate why this is failing on pygit2 backend on Windows.

https://github.com/iterative/scmrepo/blob/4253fe234d1a26a821356d4121accac11f24a86c/tests/test_git.py#L716-L718

Originally posted by @skshetry in #8 (comment)