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How to Fix Git Pull Errors: Divergent Branches, Fast-Forward, and Unrelated Histories

· 7 min read
Serhii Hrekov
Senior Software Engineer & System Architect specializing in Python, Web Systems, Cloud Infrastructure & Automation

Running git pull is usually straightforward, but when your local repository's history doesn't align with the remote server, Git stops the operation to prevent you from losing your work. This results in errors like:

  • fatal: Not possible to fast-forward, aborting.
  • Hint: You have divergent branches and need to specify how to reconcile them.
  • fatal: refusing to merge unrelated histories

Because git pull is a shortcut for running git fetch followed by git merge, you must explicitly tell Git how to reconcile these divergent histories. This guide walk you through how to fix each of these errors.