$ git clone -n https://src.fedoraproject.org/rpms/ksystemstats.git /var/lib/mock/f41-build-side-1-2647469-27302/root/chroot_tmpdir/scmroot/ksystemstats
Cloning into '/var/lib/mock/f41-build-side-1-2647469-27302/root/chroot_tmpdir/scmroot/ksystemstats'...
$ git fetch origin ccf9959e1e28eaafead112139dccf084a45ec1c7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ksystemstats
 * [new ref]         ccf9959e1e28eaafead112139dccf084a45ec1c7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ccf9959 6.1.4