Block Network Access During Install

I’m trying to setup a StarCraft install script (it’s the one that’s unpublished) that only updates to version 1.16.1. During setup, the patch will run the game after patching, causing bnupdate.exe to try to auto-update StarCraft to the Remastered version.

I have a solution for preventing it from running after setup (I just have the script remove bnupdate.exe) but I haven’t found a good solution for preventing the patcher from running it after it’s done. Openglfreak recommended unshare as a solution, but I’m having issues running it with WINE with the patcher.

Anyone have any ideas?