If you do a rebase -i because you want to squash or fix some commits, then there's git commit --squash and git commit --fixup commands which will mark commits as intending to squash or fixup another commit, and then you can use git rebase --autosquash <base> to automatically do what you want in one go. Of course, often you forget to use the --squash/--fixup options or you can't be bothered to lookup the hash of the commit you want to fix, so you'll end up using git rebase -i anyway.