$ git clone -n https://src.fedoraproject.org/rpms/kf5-kdesu.git /var/lib/mock/f45-build-14813-464/root/chroot_tmpdir/scmroot/kf5-kdesu
Cloning into '/var/lib/mock/f45-build-14813-464/root/chroot_tmpdir/scmroot/kf5-kdesu'...
$ git fetch origin 9829ef95ce00108b0bbe7c423aa9451336482192:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kdesu
 * [new ref]         9829ef95ce00108b0bbe7c423aa9451336482192 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9829ef9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild