$ git clone -n https://src.fedoraproject.org/rpms/vdr-iptv.git /var/lib/mock/f40-build-2216570-52500/root/chroot_tmpdir/scmroot/vdr-iptv
Cloning into '/var/lib/mock/f40-build-2216570-52500/root/chroot_tmpdir/scmroot/vdr-iptv'...
$ git fetch origin 8e9b940ff53061997ea715f6a6d9b9316b4ad9a7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vdr-iptv
 * [new ref]         8e9b940ff53061997ea715f6a6d9b9316b4ad9a7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8e9b940 Rebuilt for new VDR API version