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Fix 'fatal: refusing to merge unrelated histories' in Bitbucket - Troubleshooting Cloudflare Error 521 Post-Update-Fix Docker Nginx 502 Bad Gateway with MySQL

2026-07-28 05:14:10
Fix 'fatal: refusing to merge unrelated histories' in Bitbucket - Troubleshooting Cloudflare Error 521 Post-Update-Fix Docker Nginx 502 Bad Gateway with MySQL

Result check

  • Keep one change per test run so you know which step helped.
  • Undo temporary changes after the issue is confirmed.