$ git clone -n https://src.fedoraproject.org/rpms/ucviewer.git /var/lib/mock/f41-build-side-1-2671047-29078/root/chroot_tmpdir/scmroot/ucviewer
Cloning into '/var/lib/mock/f41-build-side-1-2671047-29078/root/chroot_tmpdir/scmroot/ucviewer'...
$ git fetch origin ee4928efead1288ded34adec0ed0c66fbaf383cb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ucviewer
 * [new ref]         ee4928efead1288ded34adec0ed0c66fbaf383cb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ee4928e convert GPLv2+ license to SPDX