CVE-2022-25860: Remote code execution in simple-git

The vulnerability stems from improper input sanitization in Git command argument handling. The commit diffs show added validations in block-unsafe-operations-plugin.ts for --upload-pack, --receive-pack, and -u flags, which were previously unsanitized. These methods directly accept user-controllable arguments that get passed to git CLI without proper validation in vulnerable versions. The advisory explicitly names these four methods as attack vectors, and the Snyk PoC demonstrates RCE through these endpoints. The patch adds validation checks specifically for these arguments in the plugin system that these methods utilize.