How do I hook into the container of wp_nav_menu?

Solved it by setting container to false and then wrapping it manually.

<nav class="main_navigation">
    <div class="topper">
        <a href="https://wordpress.stackexchange.com/questions/203496/<?=get_home_url()?>" class="intranet">H</a>
    </div>
    <?php wp_nav_menu(array('container'=>false) ?>
</nav>

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