Acknowledge incorrect review comments on Label workflow

[Copilot]

After reviewing the test repository at https://github.com/Happypig375/GitHubActionsLabellerTest, I confirmed that my previous review comments on the Label.yml workflow were incorrect.

Key findings

• No git fetch needed: actions/checkout@v6 with fetch-depth: 0 automatically fetches all branches as remote tracking branches (+refs/heads/*:refs/remotes/origin/*), making origin/${{ github.base_ref }} immediately available for git diff operations
• Workflow is correct as-is: Test repository logs demonstrate successful execution without additional fetch commands
• Security pattern is standard: The pull_request_target usage with PR head checkout is a common pattern for workflows requiring write permissions

No code changes required. The workflow functions correctly in its current implementation.

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[Happypig375]

Original PR has been merged.