$ git clone -n https://gitee.com/fundawang/llvm.git /var/lib/mock/dist-an23-build-207838-61678/root/chroot_tmpdir/scmroot/llvm
Cloning into '/var/lib/mock/dist-an23-build-207838-61678/root/chroot_tmpdir/scmroot/llvm'...
$ git reset --hard 341004a755399d6e811d9abd50dd4c47b4484a35
HEAD is now at 341004a Rebuild with clang