I gained about three LBS of muscle and three LBS of fat (c. 12,000 calorie surplus over the course of the bulk, so if it was 24 days long, that's a 500 calorie daily surplus, which is two Snickers bars a day on top of your normal maintenance diet) on a hypertrophy bulk. As long as I can reduce the fat while retaining the muscle, I don't see the problem. You can't grow three LBS of muscle in a month or two unless you're willing to pay the price later on by dieting to reduce the fat, but by continuing to eat more than enough protein, and continuing to hypertrophy weight train, you can reduce a lot of that fat without losing hardly any muscle.
And, it will be faster to lose the fat, than it was to gain the muscle plus fat. So the fat is slow in coming, and quick in leaving, truly transient. You just have to keep it to two Snickers bars a day or thereabouts–don't jump to six Snickers bars or you'll add more fat than muscle, which just means you're going to have to diet for far longer, during which it is difficult to eat (because it's a caloric deficit, less food), and difficult to weight train (because it's a caloric deficit, recovery and restoration between workout sessions isn't as efficient).
That dieting period is very low carbohydrate compared to a maintenance or bulking diet. I can't help that muscle grows naturally more quickly in a caloric surplus. And your body needs protein for lots of things other than maintaining muscularity, so you have to eat more than enough protein (and especially on a diet, from lean, highly concentrated protein sources), and also continue to hypertrophy weight train, to stimulate your muscularity enough to just maintain your current muscularity, while your body fat lowers, which is during times of low insulin, because insulin inhibits adipose catabolism, because insulin is busy with adipose anabolism (tissue building). It's there to build fat tissue, not let it decompose and digest, insulin is the opposite thing that you want if you want fat tissue to anabolize quickly, but you can still lose fat quickly if you eat just Snickers bars, even if it's all you eat, just as long as it's below your maintenance calorie diet. (You'll lose muscle if you only eat Snickers bars, but for instance, say your daily caloric requirement at maintenance dieting is 2250. That's nine Snickers bars. If you eat literally only seven Snickers bars a day, you'll lose two and a half LBS of fat a month at that rate.)
But seven Snickers bars don't have enough protein, so you will lose muscularity. So you'll weigh less than just the two-and-a-half LBS reduced of fat at the end of the month, because you're also going to lose muscle mass, and your bathroom scale doesn't know the difference, so you're going to be happy to have lost 4-5 LBS on the scale, but except, 1-2 LBS was muscle, which you really don't want to celebrate as good weight loss. When you lose weight, you just want to lose fat, not muscle. It's not a good goal to lose muscularity, and it's even irresponsible and irrational to plan to lose muscularity (all other things being equal). It's disordered.
So say you fast: You can't hypertrophy train while fasting, you're not going to be able to keep up with your progressions (because of the inefficient recovery and restoration between workout sessions), but you can keep getting stronger if you have more runway available for neurological adaptations to peak strength weight training, which is going to be something like twice as heavy as hypertrophy weight training. iow this isn't going to help a competitive strong man (who has already run out of neurological adaptation runway), but it can help a civilian who's interested in fasting without losing strength. Then after the fast, you'll be as strong or stronger, and you'll be able to commence hypertrophy training at the same or higher weights, because you're as strong or stronger.
