$ git clone -n https://src.fedoraproject.org/rpms/llvm7.0.git /var/lib/mock/f31-build-91261-32303/root/thebuilddir/tmp/scmroot/llvm7.0
Cloning into '/var/lib/mock/f31-build-91261-32303/root/thebuilddir/tmp/scmroot/llvm7.0'...
$ git reset --hard b60a6e5dc0215a3550b81c9249831a1c90f1e8da
HEAD is now at b60a6e5 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild