$ git clone -n https://src.fedoraproject.org/rpms/kf6-kcontacts.git /var/lib/mock/f42-build-863305-171605/root/chroot_tmpdir/scmroot/kf6-kcontacts
Cloning into '/var/lib/mock/f42-build-863305-171605/root/chroot_tmpdir/scmroot/kf6-kcontacts'...
$ git fetch origin 102470613537668b75911523fb45c1317ac41882:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kcontacts
 * [new ref]         102470613537668b75911523fb45c1317ac41882 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1024706 Frameworks 6.9