$ git clone -n https://gitee.com/llvm-la/clang.git /var/lib/mock/dist-an23.2-build-402528-72394/root/chroot_tmpdir/scmroot/clang
Cloning into '/var/lib/mock/dist-an23.2-build-402528-72394/root/chroot_tmpdir/scmroot/clang'...
$ git fetch origin 05fda45058a77130026dacb95d7bc361d55c6895:KOJI_FETCH_HEAD
From https://gitee.com/llvm-la/clang
 * [new ref]         05fda45058a77130026dacb95d7bc361d55c6895 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 05fda45 [Feature] Backport some patches from upstream on LoongArch