$ git clone -n https://gitee.com/src-anolis-os/llvm18.git /var/lib/mock/dist-an23.3-build-426548-72995/root/chroot_tmpdir/scmroot/llvm18
Cloning into '/var/lib/mock/dist-an23.3-build-426548-72995/root/chroot_tmpdir/scmroot/llvm18'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-os/llvm18
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 73bfe28 Enable llvm gold on loongarch64