$ git clone -n https://gitee.com/linguanren/oceanbase-ce.git /var/lib/mock/dist-an8.9-build-387263-71974/root/chroot_tmpdir/scmroot/oceanbase-ce
Cloning into '/var/lib/mock/dist-an8.9-build-387263-71974/root/chroot_tmpdir/scmroot/oceanbase-ce'...
$ git fetch origin ac0dfc4374e69164293af0572e0a944a82aa4441:KOJI_FETCH_HEAD
From https://gitee.com/linguanren/oceanbase-ce
 * [new ref]         ac0dfc4374e69164293af0572e0a944a82aa4441 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ac0dfc4 rm llvm and gcc