I moved away.
Back in the day, I brought a tub of glass reinforced filler with me. When they did their inspections they would start with the visual, then do the sniffer test while lifting the vehicle and checking balljoints, lights, etc.
If they told me there was a hole, I got out, slapped a smear of filler on, and got back in. By the time they were done and about to slap a reject sticker on I asked them to look again.
Rule was no sharp edges, and, all repairs needed to be permanently affixed to the body.
Then it passed instead of failed. Of course, you did get a free retest within 30 days back then too, so, they didn't really care aboutnfixing it like that because it saved them the work of having to go over it layer.