$ git clone -n https://src.fedoraproject.org/rpms/vdr-live.git /var/lib/mock/f40-build-1922773-25101/root/chroot_tmpdir/scmroot/vdr-live
Cloning into '/var/lib/mock/f40-build-1922773-25101/root/chroot_tmpdir/scmroot/vdr-live'...
$ git fetch origin 914f4c0a33af3e8471d73e2077357f5293912a95:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vdr-live
 * [new ref]         914f4c0a33af3e8471d73e2077357f5293912a95 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 914f4c0 Rebuilt for new VDR API version 2.6.9