$ git clone -n https://src.fedoraproject.org/rpms/vdr-graphlcd.git /var/lib/mock/f40-build-804542-144553/root/chroot_tmpdir/scmroot/vdr-graphlcd
Cloning into '/var/lib/mock/f40-build-804542-144553/root/chroot_tmpdir/scmroot/vdr-graphlcd'...
$ git fetch origin fdebc20bc67fd9ca06022359cbe7f050e3861511:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vdr-graphlcd
 * [new ref]         fdebc20bc67fd9ca06022359cbe7f050e3861511 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fdebc20 Rebuilt for new VDR API version