The filter to use is aptly named – woocommerce_return_to_shop_redirect – add in your themes functions.php

add_filter( 'woocommerce_return_to_shop_redirect', 'jw_woocommerce_shop_url' );
function jw_woocommerce_shop_url(){
return site_url() . '/product/my-product/';
/**Replace Link Here**/
}