Add Git commit attribution for AI-assisted code changes

[torumakabe]

Describe the feature or problem you'd like to solve

When using GitHub Copilot CLI to generate or modify code, there is no way to track which commits involved AI assistance.

Proposed solution

Add an option to automatically include AI attribution metadata in Git commits when code was generated or modified with Copilot CLI assistance. This could be implemented as:

Co-authored-by: GitHub Copilot copilot@github.com

Example prompts or workflows

Commit automatically includes:

Co-authored-by: GitHub Copilot copilot@github.com

Additional context

Consistency with other tools: GitHub Copilot Coding Agent (in GitHub Actions) and Claude Code already add AI attribution to commits, but Copilot CLI does not provide this capability

[yfoel]

As a workaround we are currently using hooks to temporarily set the local git user.name to [copilot-cli] while keeping the author email unchanged. This makes Copilot generated commits immediately visible in the commit history and git blame, while still preserving developer accountability.

{
  "version": 1,
  "hooks": {
    "sessionStart": [
      {
        "type": "command",
        "bash": "git config --local user.name \"[copilot-cli]\""
      }
    ],
    "sessionEnd": [
      {
        "type": "command",
        "bash": "git config --local user.name \"$(git config --global user.name)\""
      }
    ]
  }
}

[tykeal]

I just told the LLM to always add a co-authored by line and it does now.

[torumakabe]

This feature has already been implemented. Copilot CLI now automatically adds a Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> trailer to Git commits.

[robbiegod]

I actually just noticed this today. Is there a way to disable this in GitHub Copilot?

[schplitt]

Also looking for a way to disable this using the github copilot sdk