$ git clone -n https://src.fedoraproject.org/rpms/okular.git /var/lib/mock/f42-bootstrap-3533787-46421/root/chroot_tmpdir/scmroot/okular
Cloning into '/var/lib/mock/f42-bootstrap-3533787-46421/root/chroot_tmpdir/scmroot/okular'...
$ git fetch origin 1e4f997f626761776eb9def121be8afa5f3628d8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/okular
 * [new ref]         1e4f997f626761776eb9def121be8afa5f3628d8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1e4f997 25.04.1