$ git clone -n https://src.fedoraproject.org/rpms/vdr-ttxtsubs.git /var/lib/mock/f29-build-4389-1035/root/thebuilddir/tmp/scmroot/vdr-ttxtsubs
Cloning into '/var/lib/mock/f29-build-4389-1035/root/thebuilddir/tmp/scmroot/vdr-ttxtsubs'...
$ git reset --hard 1e76c5aa80e95a82c9617c2ff1ad60002f9a3d6e
HEAD is now at 1e76c5a - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild