Sync configuration guide

**Is your feature request related to a problem? Please describe.**
I encounter the error "Git clone failed: HTTP 400" when trying to sync the program with Git. This issue disrupts my workflow and I am unsure how to properly configure the program to avoid this error.

**Describe the solution you'd like**
I would appreciate a clear, step-by-step guide on how to correctly configure the program to sync with Git repositories. The guide should include detailed instructions from initial setup to successful syncing, with a focus on resolving or troubleshooting the "Git clone failed: HTTP 400" error.

**Describe alternatives you've considered**
I have searched online for solutions and attempted various Git configuration settings, but none have fully resolved the issue. A comprehensive official guide would be more reliable and helpful.

**Additional context**
Including troubleshooting tips or common causes for the HTTP 400 error in this context would be very beneficial. Thank you for considering this request.

No documentation file, test, or entry point is named. Start by reviewing how LiteChat currently configures and performs Git syncing, then reproduce the "Git clone failed: HTTP 400" case; done means a step-by-step setup guide covers successful syncing and includes relevant troubleshooting guidance.

Written by the indexing model from the issue text.