Rebasing has a simple rule: it is perfectly fine as long as you haven't shared those commits.* Perhaps git should have a "checked rebase" command that requires

Rebasing has a simple rule: it is perfectly fine as long as you haven't shared those commits.* Perhaps git should have a "checked rebase" command that requires a `--force` flag if there's an upstream branch set. *And even then it's kind of okay as long as no one else has made commits on top of the rebased commits.