$ git clone -n https://src.fedoraproject.org/rpms/libcdio.git /var/lib/mock/f29-build-6674-1642/root/thebuilddir/tmp/scmroot/libcdio
Cloning into '/var/lib/mock/f29-build-6674-1642/root/thebuilddir/tmp/scmroot/libcdio'...
$ git reset --hard 53936f1d5a4775eee77167d1251c51d05a40c576
HEAD is now at 53936f1 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild