$ git clone -n https://src.fedoraproject.org/rpms/stage.git /var/lib/mock/f42-build-3350034-45010/root/chroot_tmpdir/scmroot/stage
Cloning into '/var/lib/mock/f42-build-3350034-45010/root/chroot_tmpdir/scmroot/stage'...
$ git fetch origin 534e15b52d77c7df128dcf909780b995620471d4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/stage
 * [new ref]         534e15b52d77c7df128dcf909780b995620471d4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 534e15b Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild