$ git clone -n https://src.fedoraproject.org/rpms/vdr-epg2vdr.git /var/lib/mock/f42-build-863109-171404/root/chroot_tmpdir/scmroot/vdr-epg2vdr
Cloning into '/var/lib/mock/f42-build-863109-171404/root/chroot_tmpdir/scmroot/vdr-epg2vdr'...
$ git fetch origin 61cc86143bf06172d15146d91cfc2bc62e32125b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vdr-epg2vdr
 * [new ref]         61cc86143bf06172d15146d91cfc2bc62e32125b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 61cc861 rebuild for tinyxml2