$ git clone -n https://gitee.com/src-anolis-os/llvm.git /var/lib/mock/dist-lifsea8-build-75962-39290/root/chroot_tmpdir/scmroot/llvm
Cloning into '/var/lib/mock/dist-lifsea8-build-75962-39290/root/chroot_tmpdir/scmroot/llvm'...
$ git reset --hard origin/a8-llvm-toolset-stream-an8
HEAD is now at 8b17da8 update to llvm-12.0.1-2.module+el8.5.0+12488+254d2a07