It is not found in book and scroll does not work... or I did not found a way. I tried use it on damaged item in inventory, on dropped, on moved to left hand on putted to frame and even on damaged anvil :)

OK, I used it on netherite pickaxe. When you will describe it in Patchouli please do not forget say that need press-and-hold right button or else if just click then there is only tiny repair and wait 120 s after.

yeah I need to define what channeled spells are.

I forgot to add it. You need to have the item you want to repair in your second hand and target a block on the ground.

Fixed in 5.6.0