Launching VS Code this morning, I was unable to initialise git.
Error:

warning: unable to access ‘C:/Users/craig.xxxxxxx/OneDrive xxxxxxxxxxx/Documents/VS Code/BICEP/Axxxxxxxxxxx/.git/config’: Invalid argument
Resolution:
This was a super simple one. Turns out, my OneDrive was signed out and hadn’t synced recent changes. I re-authenticated with OneDrive which pulled down the most up to date config file, solving the issue.