Redirect HTTP[S] PROPFIND from host/ to host/mydir/?

Question

Apache HTTP Server

There is an application (let's call it Apple Reminder) that, when connected to CalDAV, tries to read the list of resources strictly from the root of the web server (the path will be cloud.mysite.ru)
You need to transfer its PROPFIND request to the virtual directory where the CalDAV server runs (let will be cloud.mysite.ru/radicale/).
The request goes via HTTPS (in general, the server also responds to http, but Reminder breaks exactly via https), Wirth. directory decorated with apache config:

WSGIScriptAlias /radicale /usr/share/radicale/radicale.wsgi
   <Location /radicale>
      ...
   </Location>