DIY
Turn the work over, as we will be working on the back.
Thread the needle with a color to match. I used yellow for the images only.
Find a column to the right of the moth hole and a row or two below the hole. Secure your needle in a loop there.
Don’t push your needle to the front of your fabric. By staying on the loops on the back, you will make your work almost invisible.
Continue working up and down, grabbing the loops at the side of the moth hole. Now, turn your work 90°, and work your needle across the row.
fixed!