Exclude products from a particular category on the shop page

gistfile1.txt

/**
* Exclude products from a particular category on the shop page
*/
function custom_pre_get_posts_query( $q ) {

$tax_query = (array) $q->get( 'tax_query' );

$tax_query[] = array(
'taxonomy' => 'product_cat',
'field' => 'slug',
'terms' => array( 'clothing' ), // Don't display products in the clothing category on the shop page.
'operator' => 'NOT IN'
);

$q->set( 'tax_query', $tax_query );

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