$ git clone -n https://src.fedoraproject.org/rpms/3mux.git /var/lib/mock/f38-build-709741-92980/root/chroot_tmpdir/scmroot/3mux
Cloning into '/var/lib/mock/f38-build-709741-92980/root/chroot_tmpdir/scmroot/3mux'...
$ git fetch origin 4b931d35ebdab33ef0929a383660a4c4be17cbef:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/3mux
 * [new ref]         4b931d35ebdab33ef0929a383660a4c4be17cbef -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4b931d3 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild