$ git clone -n https://src.fedoraproject.org/rpms/kf5-kcontacts.git /var/lib/mock/f39-build-1625634-39188/root/chroot_tmpdir/scmroot/kf5-kcontacts
Cloning into '/var/lib/mock/f39-build-1625634-39188/root/chroot_tmpdir/scmroot/kf5-kcontacts'...
$ git fetch origin a65d05fa779472b0350b27b6cda067c3204229d9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kcontacts
 * [new ref]         a65d05fa779472b0350b27b6cda067c3204229d9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a65d05f 5.111.0