Accessing it using the svn url of our project we don't have the correct https headers set for cache it as the best way or even for gzip the content.
When requests using the <a href="http://ajax.googleapis.com/ajax/libs/.">
http://ajax.googleapis.com/ajax/libs/.</a>.. are set a bunch of important headers (Last-Modified, Expires, Cache-Control, gzip) that makes a big difference.