$ git clone -n https://src.fedoraproject.org/rpms/llvm9.0.git /var/lib/mock/f33-build-367771-61046/root/chroot_tmpdir/scmroot/llvm9.0
Cloning into '/var/lib/mock/f33-build-367771-61046/root/chroot_tmpdir/scmroot/llvm9.0'...
$ git reset --hard bad0ab4203a5b942bc2e2bc9e4567252ea071b50
HEAD is now at bad0ab4 Backport upstream patch to fix build with -flto.