$ git clone -n https://src.fedoraproject.org/rpms/qpwgraph.git /var/lib/mock/f42-build-3427058-45200/root/chroot_tmpdir/scmroot/qpwgraph
Cloning into '/var/lib/mock/f42-build-3427058-45200/root/chroot_tmpdir/scmroot/qpwgraph'...
$ git fetch origin 70106108ac6278c445acb4cdafca18e2df3866ed:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qpwgraph
 * [new ref]         70106108ac6278c445acb4cdafca18e2df3866ed -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7010610 Update to 0.8.2