Would Leomunds Tiny Hut be able to be cast, and then stay on, an Ancient Dragon?

@fishhead1982Would Leomunds Tiny Hut be able to be cast, and then stay on, an Ancient Dragon? Asking for a friend. You could cast the spell while on the dragon, but I think the hut would slide off.

— Jeremy Crawford (@JeremyECrawford) April 17, 2017