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Fix Cloudflare 521 Error: DNS Configuration Problem - Git index.lock Error: Causes and Fixes-Resolve Git Non-Fast-Forward Push Rejection

Updated 2026-07-28 08:08:46cloud-software

Fix Cloudflare 521 Error: DNS Configuration Problem - Git index.lock Error: Causes and Fixes-Resolve Git Non-Fast-Forward Push Rejection

Prepare

Execute

Validate

Document

Operational follow-up

Record the exact option, command, or setting that changed the result.
Keep a rollback note if the workflow affects shared files or team settings.

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