title: Filter git log to show only commits with notes
body: <p>How can I dump a log of my commits showing only the ones with notes of a given namespace?</p>
  
  <p>Commits without notes, or notes not belonging to a given namespace should be filtered out</p>
  
  <p>In the text dump I do not want just the note, also the commit info.</p>
  
  <p>I have played with: show refs/notes/ and I believe the solution might be there rather than with "git log". However I am still having some problems to find the right command showing also all commits.</p>