$ git clone -n https://src.fedoraproject.org/rpms/llvm8.0.git /var/lib/mock/f33-build-165048-43476/root/chroot_tmpdir/scmroot/llvm8.0
Cloning into '/var/lib/mock/f33-build-165048-43476/root/chroot_tmpdir/scmroot/llvm8.0'...
$ git reset --hard 52908363a0b2f1a1be852b2d7a1d1aa3cb056c66
HEAD is now at 5290836 Rename llvm.spec -> llvm8.0.spec