From experience I’d say don’t fight it. If you’re doing long miles on the bike, you’re going to need food (and water) to replace it, so eat and eat aplenty. 

Post ride — split things up between carbs, protein and fat. Stay away from sweets and chocolate and try to get your carbs’ from fruit and vegetables. I find protein/milk drinks are quite good after a ride for recovery. 

Also — very important — dehydration often manifestes itself in the form of hunger. You may feel hungry but you’re actually very dehydrated, so drink LOADS of water post ride. Even if you have to force it down and don’t feel thirsty. 

Hope that helps.

Rest is equally and often more important than the training itself. Recovery is key for improvements on the bike.