Can’t Target a Widget’s Elements using jQuery

Man, every time all it takes is to press that post button and then I find the answer seconds later – lol:

jQuery(document).ready(function($){
    $(document).ready(function() {
        $(document).on('can_embed_loaded', function() {
            // do your work here, after the widget is loaded
            $('input[name="commit"]').val('Sign My Awesome Petition');
        });
    }); 
});