Just do it, and learn to use the reflog ("l r" from magit buffer). Although of course be aware of the few things that can trample your workdir like reset --hard

Just do it, and learn to use the reflog ("l r" from magit buffer). Although of course be aware of the few things that can trample your workdir like reset --hard. If in doubt, commit/stash everything, to the thing, then see what it did.