title: How to use actions/checkout@master to get sources into specified folder?
body: <p>I'm trying to implement some automation tools in my github repository, but there are some problems I'm facing to. For now, I can't understand how to get sources into the specified folder.</p>
  
  <p>For example, I have 2 branches</p>
  
  <ul>
  <li>the first one is the sources branch</li>
  <li>the second one is the test branch</li>
  </ul>
  
  <p>Now I'm trying to clone the first branch, build the project (the project is in C++) and then clone the second one and build the second one and run the tests.</p>
  
  <p>Can I do the stuff using actions/checkout or I have to use another approach? </p>
  
  <p>Also if you have some understanding of how the actions/checkout action is implemented, please let me know. I'm very interested.</p>