$ git clone -n https://src.fedoraproject.org/rpms/vdr-skinelchihd.git /var/lib/mock/f40-build-793340-138816/root/chroot_tmpdir/scmroot/vdr-skinelchihd
Cloning into '/var/lib/mock/f40-build-793340-138816/root/chroot_tmpdir/scmroot/vdr-skinelchihd'...
$ git fetch origin b8aa70944c612c83c0d34408a8e8cab034233a3a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vdr-skinelchihd
 * [new ref]         b8aa70944c612c83c0d34408a8e8cab034233a3a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b8aa709 Rebuilt for new VDR API version