$ git clone -n https://src.fedoraproject.org/rpms/synthv1.git /var/lib/mock/f29-build-4248-1022/root/thebuilddir/tmp/scmroot/synthv1
Cloning into '/var/lib/mock/f29-build-4248-1022/root/thebuilddir/tmp/scmroot/synthv1'...
$ git reset --hard f6c06767875950836b9ae194927172943d9675ef
HEAD is now at f6c0676 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild