extend url_to helper

Hi,
I would like to extend the url_to() helper function.
This is what I did...

PHP Code:

<?php

use CodeIgniter\Router\Exceptions\RouterException;

function url_to(string $controller, ...$args): string
{
    if(empty($_GET['ref'])){
        return original_url_to($controller, ...$args);
    }

    /* EXTRA CODE */
}

//This is a copy of the original CI4 url_to function
function original_url_to(string $controller, ...$args): string
{
    if(!$route = route_to($controller, ...$args)){
        $explode = explode('::', $controller);

        if(isset($explode[1])){
            throw RouterException::forControllerNotFound($explode[0], $explode[1]);
        }

        throw RouterException::forInvalidRoute($controller);
    }

    return site_url($route);
} 


But I would prefer I didn't have to make a copy of the original function, but refer directly to the CI4 function instead,
How can do this?