If you want to change where it points you can use:
<script src="//ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script>
$(document).ready(function () {
$(".header-title-logo a[href]").attr("href", "NEW_URL_HERE");
});
</script>
The only annoyance is that you have to apply this to every page with the header logo.