Is there interest in reading ~/.gitconfig.d/* and /etc/gitconfig.d/*?

I've patched Git to read ~/.gitconfig.d/* and /etc/gitconfig.d/* in addition to reading ~/.gitconfig and /etc/gitconfig where it would normally do so. the gitconfig.d/* files are read in numeric sort order as is the custom with such files and read after the main .gitconfig file so they override it.

This is very useful for me because I maintain my .gitconfig in a public git repository but I don't want anyone to know my github.token. Because of that I have to do a little song & dance every time I commit to the file (if the token is part of the diff) or pull to the file (to not encounter a merge conflict).

This would also facilitate neat stuff like easily using bits of other people's gitconfig libraries by cloning their repository somewhere and symlinking their .gitconfig to ~/.gitconfig.d/99-some-library.

I'm not attaching my patch because it would be inhumane to subject anyone to it in its current state. However, I'd like to ask if there's any interest in getting a proper & documented patch for this. If so I can submit a proper patch, if not I can just continue to patch my Git build with my hack.

Apologies if this has been brought up before. I tried to search for prior art but ".gitconfig.d" makes for a really bad search query in all the search engines I could find that index this list.