You already know that your garage is too warm, then. Your in quite the predicament, as Joe says, but try to slow the growth.
Stop watering, and get them to a colder spot. 32°F would be perfect, but at least below 35°. Maybe this:
Clear an outside uninsulated corner of the garage the size of a box that can house your lily pots. Cut out two adjacent sides and the bottom of the box so that what remains fits snugly into the corner. The cold from the walls should keep the contents of the box colder than the garage temperature. You may need to add insulation of some sort around the box. Put a thermometer inside the box so you can monitor the temp.
Next year, don't water at all. When the pots seem thoroughly dry, put them in a plastic bag so they won't overly dehydrate. That and cool temperatures will likely keep them dormant until your ready to start watering in spring.
It's funny you should post today, as I have just discovered a Calochortus uniflorus sprouting in the fridge, and am kind of in the same situation.
Joebass said:This sounds like it is going to involve talk of 'the matrix '!
Isn't it Depak Chopra that believes that the "reality" we think we live in isn't really real?
I am that. Your are that. This is that. And that's all there is. [That, meaning everything.]
--- ancient Vedic saying