$ git clone -n https://src.fedoraproject.org/rpms/xfdashboard.git /var/lib/mock/f41-build-side-1-2671371-29139/root/chroot_tmpdir/scmroot/xfdashboard
Cloning into '/var/lib/mock/f41-build-side-1-2671371-29139/root/chroot_tmpdir/scmroot/xfdashboard'...
$ git fetch origin bfbbd222187c2cc64cffbfa19b7503e78cbab5e8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xfdashboard
 * [new ref]         bfbbd222187c2cc64cffbfa19b7503e78cbab5e8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bfbbd22 convert GPLv2+ license to SPDX