Which works for a while, until you have a bunch of projects under various identities.

In my main ~/.gitconfig I have:

  [includeIf "gitdir:/home/user/projects/embedding-shapes/"]
  path = /home/user/.gitconfig-embedding-shapes

Where basically `projects/` follow GitHub naming with $user/$repo, so I set the git identity based on all projects within that user, rather than repo-by-repo which would get cumbersome fast.

Then you just make sure you're in the right directory :)