$ git clone -n https://gitee.com/llvm-la/clang.git /var/lib/mock/dist-an23-build-python3.11-374633-71651/root/chroot_tmpdir/scmroot/clang
Cloning into '/var/lib/mock/dist-an23-build-python3.11-374633-71651/root/chroot_tmpdir/scmroot/clang'...
$ git fetch origin 366b8b70b143f6b3e6bf967c5c638e65216ea0d5:KOJI_FETCH_HEAD
From https://gitee.com/llvm-la/clang
 * [new ref]         366b8b70b143f6b3e6bf967c5c638e65216ea0d5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 366b8b7 LoongArch: Backport patches from release/18.x