$ git clone -n https://gitee.com/fundawang/llvm.git /var/lib/mock/dist-an23-build-255500-63653/root/chroot_tmpdir/scmroot/llvm
Cloning into '/var/lib/mock/dist-an23-build-255500-63653/root/chroot_tmpdir/scmroot/llvm'...
$ git reset --hard 9687c255650b80b711312ef0d2d394aa736f132b
HEAD is now at 9687c25 16.0.2