$ git clone -n https://src.fedoraproject.org/rpms/kf5-kcontacts.git /var/lib/mock/f41-build-809289-146243/root/chroot_tmpdir/scmroot/kf5-kcontacts
Cloning into '/var/lib/mock/f41-build-809289-146243/root/chroot_tmpdir/scmroot/kf5-kcontacts'...
$ git fetch origin 3c66d8fab136a506a4eeddabd7feceaf47a803a4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kcontacts
 * [new ref]         3c66d8fab136a506a4eeddabd7feceaf47a803a4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3c66d8f 5.116.0