How to exclude ENG version sites/folders form sitemap?

Edit- if it’s impossible would be nice to have such info, so I won’t take my time looking for it.

Hello! I would like to exclude some of my collections in second language from site map. They are not published in collection but still visible in sitemap?

Should i do it site by site(a lot of them and still growing), or can I somehow exclude collection with “en” in the route? Should i do it in robo.txt or site map setting?

Example- i have 90 sites for Silesia voivodeship in Polish but don’t need this collection in English .

@dejan @Pakic or anyone from from Divhunt team?