$ git clone -n https://src.fedoraproject.org/rpms/lutris.git /var/lib/mock/f39-build-2337381-59515/root/chroot_tmpdir/scmroot/lutris
Cloning into '/var/lib/mock/f39-build-2337381-59515/root/chroot_tmpdir/scmroot/lutris'...
$ git fetch origin 026b6182aa1030726708e36ecf82c6246eaa6552:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lutris
 * [new ref]         026b6182aa1030726708e36ecf82c6246eaa6552 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 026b618 Merge branch 'rawhide' into f39