Not really, if the calls get assigned it means I made a ton of profit from holding the stock anyway, I can deal with a little bit of loss. The biggest shit-your-pants upswing that happened in a short period of time was TWLO, I did eventually get back in and went on to make more money though.
Don’t let it get that far. If the stock is ripping up and you think it’s going to assign then you buy back the call (for a loss) and roll out to a new covered call at a higher price and further away.
The true risk is if the stock suddenly gaps up without warning, not the slow gradual climb in price. But that’s really around earnings time and I don’t sell calls during a stocks earnings.