If he's not acting like he's in shock, then you provide a heat source, clean water and wait hopefully for him to recover. (He won't need food until 72 hrs of age, and he won't want it until about 30 hrs of age.)
If he is acting like he's in shock (sleepy, cold, no noise) then he needs warmed up ASAP and maybe some electrolytes in his water. (2 qt water, 1 tsp baking soda, 1 tbsp honey/sugar/corn syrup, 1 pinch salt.)
In both cases, if you have poultry vitamins, I'd use them.
I'd also keep a very close eye on any hatching eggs, in case she does this again.