I just upgraded from 5.0.16 to 5.3.0, and found that the upgrade wiped out the Git sync settings that were defined in the admin UI.
Attempting to add the Git sync settings back via the admin UI results in an error that the Git sync settings already exist. So, this seems like a cosmetic or false-positive error that Git sync is not configured.
Edit: I’ve rolled back to 5.0.16 in light of this and a few other bugs I noticed in 5.3.0.
Product: PowerShell Universal
Version: 5.3.0