title: Bitbake -c clean removed source
body: <p>I'm beginner for '<strong>BitBake</strong>'. I need to modify source code and build it. I found the sources to be located at build/tmp/work/ within a directory which has git commit id as its name. I wanted to rebuild the source. So I gave <code>bitbake -c clean &lt;package_name&gt;</code>, followed by <code>bitbake &lt;package_name&gt;</code>. The image got built. But, when I went back to modify the source, the git repository seems to be missing in its location. </p>
  
  <p>1) How do I get the source back?</p>
  
  <p>2) What is the safe way of rebuilding the source after making modifications?</p>
  
  <p>Thanks in advance.</p>