$ git clone -n https://src.fedoraproject.org/rpms/gnu-smalltalk.git /var/lib/mock/f29-build-5429-1294/root/thebuilddir/tmp/scmroot/gnu-smalltalk
Cloning into '/var/lib/mock/f29-build-5429-1294/root/thebuilddir/tmp/scmroot/gnu-smalltalk'...
$ git reset --hard ffb4fde9e8df1e35a2b98651fc99197ffab80e54
HEAD is now at ffb4fde - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild