How would it be gone? You can't rebase onto a dirty working directory so you can't blow away uncommitted changes accidentally and any state prior to and during

How would it be gone? You can't rebase onto a dirty working directory so you can't blow away uncommitted changes accidentally and any state prior to and during the rebase is always recoverable via the reflog. It takes trying to do anything that's not easily recoverable as long as you commit before you start messing around and don't rm -rf .git.