Change Slim Request property

How can I change a Slim Request's URI path? I tried the following, however, withPath() clones the uri thus the request object isn't changed. If it is not possible, is there a straightforward process to create a new Slim Request based on the original Request but the new URI path?

Background regarding why I wish to do so. I have a method which accepts a Slim Request, performs a cURL request to another server using Guzzle, writes to the Slim Response, and returns the Slim Response. The API which Guzzle queries almost the same path but with a version number.

$app->get('/{basetype:guids|tester}/{guid}/logs/{id:[0-9]+}', function (Request $request, Response $response, $args) {
    switch($request->getQueryParam('ContentType')) {
        case 'text':
            //
            return $this->view->render($response, 'log.html', $rs);
        case 'file':
            $uri=$request->getUri();
            $path=$uri->getPath();
            $uri->withPath(_VER_.$path);
            return $this->serverBridge->proxy($request, $response, 'application/octet-stream');
    }
});

class ServerBridge
{
    protected $httpClient;

    public function __construct(\GuzzleHttp\Client $httpClient)
    {
        $this->httpClient=$httpClient;
    }

    public function proxy(\Slim\Http\Request $slimRequest, \Slim\Http\Response $slimResponse):\Slim\Http\Response {
        //$slimRequest is used to obtain data to send to Guzzle 
        $curlResponse = $this->httpClient->request($method, $path, $options);
        //use $curlResponse to get data and write to $slimResponse
        return $slimResponse;
    }
}

If you change the Uri path, you have to change the request as well. This is by design. Don't worry, cloning is cheap in PHP.

<?php

$request = $request->withUri($request->getUri()->withPath('your/changed/path'));

Note: Be careful to use that new $request in some other calls in the middleware stack. They were made immutable for a reason. Changing the uri of a request early in the execution can have undesirable side effects.