The owner check

adds a significant performance issue, because the path normalization git_fs_path_prettify_dir is called for every safe.directory value in .gitconfig.

Reproduction steps

Have many safe.directory entries in .gitconfig, potentially several pointing to unavailable UNC-paths such as %(prefix)///192.168.123.123/Foo/bar/repo1 or NFS shares.

libgit2 will contact each of those for path validation.

Version of libgit2 (release number or SHA1)

All since be3a78c

Operating system(s) tested

Windows 10