codex-actionでバグissueを自動で修正する

codex-actionでバグのissueを自動で修正するワークフローを作成しました。
以下がソースコードです。

name: code autofix
on:
  issues:
    types: [labeled]
jobs:
  codex:
    if: github.event.label.name == 'bug'
    runs-on: ubuntu-latest
    permissions:
      contents: write
      issues: read
      pull-requests: write
    steps:
      - name: Checkout Repository
        uses: actions/checkout@v5
        with:
          fetch-depth: 0
      - name: Run Codex
        uses: openai/codex-action@v1
        id: codex
        with:
          openai-api-key: ${{ secrets.OPENAI_API_KEY }}
          prompt: |
            Issueの内容からバグを修正して下さい。

            Issue Content:

            ${{ github.event.issue.body }}

      - name: Setup Git
        run: |
          git config --global user.name "github-actions[bot]"
          git config --global user.email "github-actions[bot]@users.noreply.github.com"

      - name: Create branch and commit changes
        env:
          BRANCH_NAME: codex/auto-fix-${{ github.run_number }}
        run: |
          git checkout -b $BRANCH_NAME
          git add .
          git commit -m "Fix: Auto-fix by Codex for issue #${{ github.event.issue.number }}" || echo "No changes to commit"
          git push origin $BRANCH_NAME

      - name: create pull request
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GH_TOKEN }}
          script: |
            await github.rest.pulls.create({
              owner: context.repo.owner,
              repo: context.repo.repo,
              title: "auto fix codex",
              head: `codex/auto-fix-${{ github.run_number }}`,
              base: "main",
              body: "Codexにより自動で修正されました。",
              draft: true
            });