can i use "[nostamp]" or something else to force a full rebuild of a recipe?

Robert P. J. Day

tryint to keep this short, i have a morty-based build wherein, every
so often, one of a small number of recipes (ruby gems) has a build
error, and this can almost always be resolved by just cleaning that
recipe and building it from scratch.

can i use a "nostamp" flag on some task of the recipe to guarantee
that that recipe is fully cleaned and rebuilt every time, no matter
what? it's not clear that will solve the intermittent bug, but we're
willing to give it a shot.

any easy way to do this? thanks.