$ git clone -n https://gitee.com/fundawang/oceanbase.git /var/lib/mock/dist-an23-build-329500-69372/root/chroot_tmpdir/scmroot/oceanbase
Cloning into '/var/lib/mock/dist-an23-build-329500-69372/root/chroot_tmpdir/scmroot/oceanbase'...
$ git fetch origin 9f75a390508cc7f4c31a6e73667cf16823c62a89:KOJI_FETCH_HEAD
From https://gitee.com/fundawang/oceanbase
 * [new ref]         9f75a390508cc7f4c31a6e73667cf16823c62a89 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9f75a39 build with clang