$ git clone -n https://gitee.com/ocs-bot/llvm.git /var/lib/mock/dist-ocs23-build-112852-7414/root/chroot_tmpdir/scmroot/llvm
Cloning into '/var/lib/mock/dist-ocs23-build-112852-7414/root/chroot_tmpdir/scmroot/llvm'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/ocs-bot/llvm
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a09e637 Upgrade to version 17.0.6