Q.peach tree peaches
My peaches have what looks like bruises roundish in shape, like a bruise, the fruit under the skin is brown in that area too, just like a bruise. There is no evidence of rot fussiness, distortion, just these brown spots, that look like bruises.

Downtoearthdigs
Answered on August 14, 2017
This sounds like Peach Scab.
This article has more information.
https://www.gardeningknowhow.com/edible/fruits/peach/peach-scab-treatment.htm
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