title: Cloning private github repository within organisation in actions
body: <p>I have 2 private GitHub repositories (say A and B) in the organization (say ORG). Repository A has repository B in <code>requirements.txt</code>:</p>
  <pre><code>-e git+git@github.com:ORG/B.git#egg=B
  </code></pre>
  <p>And I have the following workflow for A (in <code>.github/workflows/test.yml</code>):</p>
  <pre><code>name: Python package
  
  on: push
  
  jobs:
    build:
  
      runs-on: ubuntu-latest
  
      steps:
      - uses: actions/checkout@v1
  
      - name: Install requirements
        run: |
          pip install -r requirements.txt
  
      - name: Test with pytest
        run: |
          pytest ./tests
  </code></pre>
  <p>As B is private, it fails on installing it.</p>
  <p>Is it possible to install B while testing A in this workflow if they are in the same organization? How?</p>