$ git clone -n https://src.fedoraproject.org/rpms/grafana.git /var/lib/mock/f40-build-1890789-25061/root/chroot_tmpdir/scmroot/grafana
Cloning into '/var/lib/mock/f40-build-1890789-25061/root/chroot_tmpdir/scmroot/grafana'...
$ git fetch origin 0990d026fac54bd08b2507995f41a8ceb2548b85:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/grafana
 * [new ref]         0990d026fac54bd08b2507995f41a8ceb2548b85 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0990d02 Merge branch 'rawhide' into f40