$ git clone -n https://src.fedoraproject.org/rpms/Add64.git /var/lib/mock/f29-build-6994-1717/root/thebuilddir/tmp/scmroot/Add64
Cloning into '/var/lib/mock/f29-build-6994-1717/root/thebuilddir/tmp/scmroot/Add64'...
$ git reset --hard 908fd9c40f37cc1435a03765912f9f7f3181534e
HEAD is now at 908fd9c - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild