Fix identifying symlinks

[branchv]

Hey, cool project!

When trying to replace pre-commit in my repo, I noticed symlinks weren't being identified since std::fs::metadata resolves symlinks:

This function will traverse symbolic links to query information about the destination file.

[j178]

Thanks! Should we use https://doc.rust-lang.org/std/fs/fn.symlink_metadata.html instead of std::fs::metadata?

[branchv]

Yea makes sense, done