Home / office-tools / Fix Cloudflare 521 Error on Nginx: Step-by-Step Guide - How to Fix Git Push Rejected Non-Fast-Forward Error-How to Fix Git Detached HEAD and Checkout a Branch

Fix Cloudflare 521 Error on Nginx: Step-by-Step Guide - How to Fix Git Push Rejected Non-Fast-Forward Error-How to Fix Git Detached HEAD and Checkout a Branch

2026-07-28 13:24:44

Fix Cloudflare 521 Error on Nginx: Step-by-Step Guide - How to Fix Git Push Rejected Non-Fast-Forward Error-How to Fix Git Detached HEAD and Checkout a Branch

Result check

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