I'm happy to take contributions if you want to throw some tokens at it. Bug reports would be amazing, since I haven't tested it for real very much (enough to know you can do basics).

I want to get it to the point where we can replace fork/exec'ing to an unknown Git binary or having said binary be an external dependency for GitButler. The networking stuff (push/fetch) is currently an external dep for both GitButler and Jujutsu (and pretty much every other Git-based tool in the world). I'm pretty sure I can get the project good enough at these networking ops (including all the hairy credential stuff) to be able to not need those fork/exec calls.

I won't touch relicensed code even if you payed me.

This is morally, if not legally, wrong.