app/soc/templates/modules/gci/_header.html

<div class="block-header">
  <div class="header">
    <div class="soc-wrapper">
      <div class="soc">
        <a href="{{ gsoc_link }}">Looking for Google Summer of Code? Click here!</a>
      </div>
    </div>
    <h1 class="logo ir">
      <a href="{{ home_link }}">
        <img src="/soc/content/{{ app_version }}/images/gci/logo/banner-{{ program_id }}.png" class="img-responsive" alt="Google Code-in" />
      </a>
    </h1>
  </div>
</div>