I&#x27;m guessing the parent doesn&#x27;t mean only bower, but bower uses github as the source of packages&#x2F;code (I don&#x27;t use bower, so I&#x27;m only going from memory).  On a build that downloads everything &#x27;fresh&#x27; it&#x27;s not going to be able to get sources that are only on github.<p>Bower certainly isn&#x27;t the only thing that does it.  It&#x27;s a trend that&#x27;s becoming more and more common.