In 5 minutes time, I have found 2 items in "damaged" condition:
1 x Black Firefighter pants
1 x Combat boots Bluerock
I have used the normal sewing kit on the pants, and leather sewing kit on the boots.
Both items were patched once, on second try I got the message
' This item is pristine, it does not need to be patched'
On the pants (which I was wearing at time of patching) the status 'damaged' only got updated to 'pristine' after dropping them and picking them back up.