$ git clone -n https://src.fedoraproject.org/rpms/python-gnocchiclient.git /var/lib/mock/f40-build-2213691-52346/root/chroot_tmpdir/scmroot/python-gnocchiclient
Cloning into '/var/lib/mock/f40-build-2213691-52346/root/chroot_tmpdir/scmroot/python-gnocchiclient'...
$ git fetch origin 216f13fbe152b3174d5ca271db2bedd9a998c603:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-gnocchiclient
 * [new ref]         216f13fbe152b3174d5ca271db2bedd9a998c603 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 216f13f Fix sources file for new release