Before you say
Oh, this is a duplicate of insert thread here
I've already read some of them, they all say something about a component tag thats being added. Well while messing around with commands and typing "/give" the template says this
/give (player: target) (itemName: Item) [amount: int] [data: int] [components: json]
So since those questions were asked awhile go, did they add components, can we get custom heads now?
compontents
tag, although it was added, is much more limited than real NBT. This is covered by the pre-existing canonical NBT question, which this is therefore a duplicate of.