$ git clone -n https://gitee.com/fundawang/llvm.git /var/lib/mock/dist-an23-build-210056-61896/root/chroot_tmpdir/scmroot/llvm
Cloning into '/var/lib/mock/dist-an23-build-210056-61896/root/chroot_tmpdir/scmroot/llvm'...
$ git reset --hard 515b7cf14d838b41aa27a2b05f9a39562cf0109e
HEAD is now at 515b7cf Build with clang