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How to Recover from Detached HEAD in Git - How to Fix Nginx Upstream Connection Refused on Port 80-ERR_NAME_NOT_RESOLVED Chrome Fix: Proxy & DNS Steps

Updated 2026-07-28 12:06:52cloud-software
How to Recover from Detached HEAD in Git - How to Fix Nginx Upstream Connection Refused on Port 80-ERR_NAME_NOT_RESOLVED Chrome Fix: Proxy & DNS Steps
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.