A Fender acoustic in with a broken headstock. Part of the break follows the scarf joint and then on the bass side it goes vertical. Fortunately it was a nice clean break and hinged on the overlay (ie still attached).
My glue of choice on a clean headstock break is hot hide glue. It dries super hard and is not susceptible to creep like yellow or white glues. Creep is when the glue joint slowly deforms under load.
Check out the video below for the repair and subscribe to my Youtube channel.