Does the master branch gets modified when I merge it into another branch? : <p>Simple question:</p>

<p>I recently found out that you can merge your <code>master</code> into derived feature <code>branches</code> (to update your feature branch with the latest <code>master</code> changes).</p>

<p>By doing so, am I modifying the <code>master</code> in any way? Or is it completely unaltered by that operation?</p>
