$ git clone -n https://src.fedoraproject.org/rpms/perl-GStreamer.git /var/lib/mock/f29-build-3614-935/root/thebuilddir/tmp/scmroot/perl-GStreamer
Cloning into '/var/lib/mock/f29-build-3614-935/root/thebuilddir/tmp/scmroot/perl-GStreamer'...
$ git reset --hard 5db1fea721418501abc49535500236ca41c92bd3
HEAD is now at 5db1fea Add build-require gcc