$ git clone -n https://gitee.com/llvm-la/clang.git /var/lib/mock/dist-an23-build-python3.11-399187-72309/root/chroot_tmpdir/scmroot/clang
Cloning into '/var/lib/mock/dist-an23-build-python3.11-399187-72309/root/chroot_tmpdir/scmroot/clang'...
$ git fetch origin 663e8f2761d72b65e03a5ae699af2a51ed451c97:KOJI_FETCH_HEAD
From https://gitee.com/llvm-la/clang
 * [new ref]         663e8f2761d72b65e03a5ae699af2a51ed451c97 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 663e8f2 LoongArch: Modify -mcmodel options to be consistent with GCC