Woocommerce products from category loop

                                          $loop = new WP_Query( array(
    'post_type' => 'product',
    'post_status' => 'publish',
    'posts_per_page' => 5,
    'tax_query' => array( array(
        'taxonomy'         => 'product_cat',
        'field'            => 'slug', // Or 'term_id' or 'name'
        'terms'            => get_query_var( 'product_cat' ), // A slug term
        // 'include_children' => false // or true (optional)
    )),
    'orderby' => 'rand'
) );