New wool garment with moth hole already?

A new, online-purchased wool Icebreaker shirt already has a hole in the fabric. It looks like it was caused by a moth. The shirt was folded, and stacked under a bunch of new clothes, so the hole location was not accessible by a moth. I'm thinking the factory had moths?

Has anyone ever had this happen to them? One time I bought a sweater from a store, and I only realized later it had moth holes! (I have always wondered how stores with their front doors wide open can deal with the moth problem). Are there other kinds of insects that could be responsible for this?