pr_pre_get_posts.php

<?php
/**
 * Hide product category from main query
 * Update line 17 with the slug of the category to be hidden
 */
function pr_product_query( $q ) {

    if ( ! $q->is_main_query() ) return;
    if ( ! $q->is_post_type_archive() ) return;

    if ( ! is_admin() && is_shop() ) {

	$tax_query = array(
          array(
            'taxonomy' => 'product_cat',
            'field' => 'slug',
            'terms' => array( 'hoodies' ), // Update the value here
            'operator' => 'NOT IN'
          )
        );
        $q->set( 'tax_query', $tax_query );

    }

}
add_action( 'woocommerce_product_query', 'pr_product_query' );