$ git clone -n https://src.fedoraproject.org/rpms/xfce4-diskperf-plugin.git /var/lib/mock/f41-build-side-1-2810771-32921/root/chroot_tmpdir/scmroot/xfce4-diskperf-plugin
Cloning into '/var/lib/mock/f41-build-side-1-2810771-32921/root/chroot_tmpdir/scmroot/xfce4-diskperf-plugin'...
$ git fetch origin ef1440954a69576b577eeb17ae9178002a4b73a9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xfce4-diskperf-plugin
 * [new ref]         ef1440954a69576b577eeb17ae9178002a4b73a9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ef14409 convert license to SPDX