$ git clone -n https://src.fedoraproject.org/rpms/flyingsaucersattack.git /var/lib/mock/f29-build-5473-1303/root/thebuilddir/tmp/scmroot/flyingsaucersattack
Cloning into '/var/lib/mock/f29-build-5473-1303/root/thebuilddir/tmp/scmroot/flyingsaucersattack'...
$ git reset --hard 3a392bf43201b189848c4d9ad1e9a749e7c1eeb8
HEAD is now at 3a392bf - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild