elkangaroo: You should be able to change interface and subtitle language to "czech" in the main menu, czech audio is not (yet) available, see
https://www.gog.com/game/cyberpunk_2077 for available languages.
tomnovotnyyartist: Yeah i know, but problem is when i changed in game and quit game and open again i have english because of config of gog galaxy prefs. And that's annoying.
A simple modification works for this (for the GOG version in Czech):
edit ".. \ Cyberpunk 2077 \ goggame-1423049311.info"
rewrite the lines "language": "English" to "language": "Czech"
and "languages": ["en-US"], to "languages": ["cs-CZ"],
make a copy and rewrite only the specified text each time an update that overwrites the original back.
Then the Czech language always starts. At least it works for me. Update 1.12 again overwrites the specified file.