$ git clone -n https://src.fedoraproject.org/rpms/plasma-systemmonitor.git /var/lib/mock/f41-build-1012494-17768/root/chroot_tmpdir/scmroot/plasma-systemmonitor
Cloning into '/var/lib/mock/f41-build-1012494-17768/root/chroot_tmpdir/scmroot/plasma-systemmonitor'...
$ git fetch origin 7d4ea37a335f330483a4da3948c4c82de4aaad05:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-systemmonitor
 * [new ref]         7d4ea37a335f330483a4da3948c4c82de4aaad05 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7d4ea37 6.1.0