$ git clone -n https://gitee.com/fundawang/llvm.git /var/lib/mock/dist-an23-build-210519-61900/root/chroot_tmpdir/scmroot/llvm
Cloning into '/var/lib/mock/dist-an23-build-210519-61900/root/chroot_tmpdir/scmroot/llvm'...
$ git reset --hard b587974f3bc5fb3f4c53720eee43f4647c101c44
HEAD is now at b587974 Rebuild with clang