$ git clone -n https://src.fedoraproject.org/rpms/mame.git /var/lib/mock/f39-build-2416539-60574/root/chroot_tmpdir/scmroot/mame
Cloning into '/var/lib/mock/f39-build-2416539-60574/root/chroot_tmpdir/scmroot/mame'...
$ git fetch origin 6e1382ccaae5174493a840454100d88e522ada6b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mame
 * [new ref]         6e1382ccaae5174493a840454100d88e522ada6b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6e1382c Rebuild (qt6)