it's not a common enough job any supplier would bother to make a patch - I don't think anyone but you or someone else on hand could do anything about that complex shape and the particular damage
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics