$ git clone -n https://src.fedoraproject.org/rpms/llvm7.0.git /var/lib/mock/f33-build-257965-50931/root/chroot_tmpdir/scmroot/llvm7.0
Cloning into '/var/lib/mock/f33-build-257965-50931/root/chroot_tmpdir/scmroot/llvm7.0'...
$ git reset --hard 35491afcd446a4c67cc5e01342da4fd9f3a8f310
HEAD is now at 35491af correct spec filename to agree with package name