The person who last pushed. jj force pushes by default, but unlike git, the force push defaults to the "safe" variant (similar to git's --force-with-lease). So

The person who last pushed. jj force pushes by default, but unlike git, the force push defaults to the "safe" variant (similar to git's --force-with-lease). So you won't accidently overwrite someone else's changes with your force push.