Yeah, but for this project, why would you choose (as others stated they would or prefer) to call out to an external program instead of using https://github.com/libgit2/git2go (libgit2, FFI) for example? For what it is worth, there is also a pure Go implementation: https://github.com/go-git/go-git (pure Go).

Keep in mind the initial comment, which is "I would have used libgit2 myself in any languages.", and they claimed it is a bad idea due to performance, as opposed to calling out to an external program.