$ git clone -n https://src.fedoraproject.org/rpms/python-qcengine.git /var/lib/mock/f40-build-2070388-49317/root/chroot_tmpdir/scmroot/python-qcengine
Cloning into '/var/lib/mock/f40-build-2070388-49317/root/chroot_tmpdir/scmroot/python-qcengine'...
$ git fetch origin e452ad586822a5eec4218eacccd5fae896066b9c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-qcengine
 * [new ref]         e452ad586822a5eec4218eacccd5fae896066b9c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e452ad5 update to 0.28.1