When we finish Moed Katan, Daf Yomi moves on to Chagiga. Alas, there is no Rif on Moed Katan. Or Rosh, for that matter.
Or so it seems.
In fact, there is for both. It is simply very short and out of order. While Bavli has Chagiga after Moed Katan, Yerushalmi has it first. And so, that is where Rif and Rosh place it. Of course, not much is relevant halacha lemaaseh, and so we have only on Chagiga 18a.