title: How to force Git to commit a file if it is recognized as unchanged
body: <p>I have 2 binary files, which have</p>
  
  <ul>
  <li>exactly same size</li>
  <li>exactly same modification date</li>
  <li>exactly same creation date</li>
  </ul>
  
  <p>but</p>
  
  <ul>
  <li>different content</li>
  </ul>
  
  <p>If I replace one file with the other, 
  git does not recognize this file as changed.</p>
  
  <p>Filesystem: NTFS, OS: Windows 7, Git Version: 1.9.0</p>
  
  <p>(my workaround is to edit this new file to get a new modification date but I keep same content)</p>
  
  <p><strong>How can I force Git to commit the new file?</strong></p>