How to test my game for Rift S if I only have the old Rift

Is there a way to test my game for the new Rift S with the old Rift hardware, without buying the new equipment?  I expect potential problems with the new controllers.  My game is using libovravatar's ovrAvatarComponent_Get() to get the controller models (within Unity's Oculus Integration package, but that may not be relevant).  I guess I'm looking for:

* either a way configure stuff (e.g. a hidden option in Oculus Home) so that libovravatar would return the new controller models instead of the old ones, even though that wouldn't match my actual hardware;

* or some other functions from libovravatar that can be temporarily called to obtain a different controller model.

Hints?