$ git clone -n https://gitee.com/fundawang/oceanbase.git /var/lib/mock/dist-an23-build-329508-69372/root/chroot_tmpdir/scmroot/oceanbase
Cloning into '/var/lib/mock/dist-an23-build-329508-69372/root/chroot_tmpdir/scmroot/oceanbase'...
$ git fetch origin 451b1f70efe9263001c256de9e025bd816c7f5ce:KOJI_FETCH_HEAD
From https://gitee.com/fundawang/oceanbase
 * [new ref]         451b1f70efe9263001c256de9e025bd816c7f5ce -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 451b1f7 build with clang