Here’s a memo on how to cancel/reverse refunds in Stripe.
Refunds can't be cancelled. If you'd like to charge your customer for the amount that you have refunded, you can create a new charge for your customer. If the card that you have refunded is expired or cancelled, the customer's new card will be credited with the refund. In the rare case that the customer doesn't have a new card, the bank will usually send the refund to the customer's bank account. In the worst case, the bank won't know what to do, and will send the refund back to us, at which point we'll contact you via email to ask how you would like to handle the refund.
To conclude, refund cancellation processing is apparently not possible.
Instead, you can create a new payment through “Create Payment” from the Stripe admin panel, so you can charge the refunded amount again using this method.
・Can I cancel a refund? : Stripe: Help & Support
That’s all from the Gemba.