can you reset sketch move maybe if you accidentally copy growl when you want roar
and can you sketch two same move like 2 close combats
Nope, once you use it once, it disappears.
>It enables the user to permanently learn the move last used by the target. Once used, Sketch disappears. -Bulbapedia
Nope, sorry you can't. You can only copy one of every move.
Source - Personal Experience