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Fix Git 'index.lock' File Exists Error in SourceTree - Docker Nginx 502 Upstream Error Fix-How to Resolve 'git remote origin already exists' on GitLab

2026-07-28 14:07:49
Fix Git 'index.lock' File Exists Error in SourceTree - Docker Nginx 502 Upstream Error Fix-How to Resolve 'git remote origin already exists' on GitLab

Result check

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