GHSA-9XWC-HFWC-8W59 mcp-server-git argument injection in git_diff and git_checkout functions allows overwriting local files

In mcp-server-git versions prior to 2025.12.18, the gitdiff and gitcheckout functions passed user-controlled arguments directly to git CLI commands without sanitization. Flag-like values e.g., --output=/path/to/file for gitdiff would be interpreted as command-line options rather than git refs,...