As of this writing, Baldur’s Gate 3 updated to ‘Patch 4’ with a lot of changes. Unfortunately, those changes mean there will not be a standalone ‘Patch 4’ to update your game. The developers made a lot of changes to the system files, thus not allowing the ability to create a update patch. You will have to download the whole game again with Patch 4 included.
As of this writing, Fitgirl/DODI have not updated to this version. The only torrent one I know of is a Steam version on 1337x by IGGGAMESCOM; full game w/ Patch 4 included.
Just to note: Patch 4 has broken a lot of mods, and has a few issues of its own. Also, from reports here, it breaks Vulkan on Linux. User beware.
You can get the original russian GOG installers via magnet links at freegogpcgames
Just scroll down the front page to the updated section, should be towards the top of the list.
edit: if this is a new source for people, afaik it’s safe, I’ve been using them for years. I scan everything with BitDefender and it doesn’t throw up any flags. Probably one of the sources for the InsaneRamzes GOG releases that get repacked on a regular basis.
edit: “russian GOG installers” just means it also includes that language option