Found some more pics on this site: https://hackerscurator.com/pages/costumes/burn.html
That look could be matched/masced with unbleached cotton drill vest and pants. You could get a similar effect finding a pair of painter's pants and a matching or complementary vest.
Roundhouse Denim makes good quality jeans and sells factory seconds/irregulars for extremely cheap. You could try these painter's pants and look for a vest. Just about any vest in a color you like would work well too just make sure to get one without a buckle across the back or it will give ren faire (unless that's what you want!).