$ git clone -n https://gitee.com/llvm-la/llvm.git /var/lib/mock/dist-an23.2-build-400027-72361/root/chroot_tmpdir/scmroot/llvm
Cloning into '/var/lib/mock/dist-an23.2-build-400027-72361/root/chroot_tmpdir/scmroot/llvm'...
$ git fetch origin 12202ca5dc3e5a5aedef3c606877c74045ce00dc:KOJI_FETCH_HEAD
From https://gitee.com/llvm-la/llvm
 * [new ref]         12202ca5dc3e5a5aedef3c606877c74045ce00dc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 12202ca LoongArch: Backport patches from upstream