$ git clone -n https://src.fedoraproject.org/rpms/openmpi.git /var/lib/mock/f41-build-side-1-2650083-27560/root/chroot_tmpdir/scmroot/openmpi
Cloning into '/var/lib/mock/f41-build-side-1-2650083-27560/root/chroot_tmpdir/scmroot/openmpi'...
$ git fetch origin f829fbc7e745727f620c5196627cda6fc8b3ae0c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/openmpi
 * [new ref]         f829fbc7e745727f620c5196627cda6fc8b3ae0c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f829fbc convert license to SPDX