Alternative to fetch eager / lazy ? Performances issues

[t0F]

Hi,
I have some entities with properties relations to a second node :

Class MainNode (
    /**
     * @OGM\ManyToOne(relation="linkSecondNode")
     */
    protected $secondNode;

    /**
     *
     * @return mixed
     */
    public function getSecondNode() {
        return $this->secondNode;
    }

When I make a query to return a list of MainNodes, and then use the getSecondNode method, I have poor performances. I assume that's because it need a query to get the secondNode data the first time we use the method.

In doctrine you can add a "fetch" annotations to define what need to be return by query.
Is there a way to make something like that, in order to get all data need in one query ?
Thanks for your time.