In one of my recent SharePoint 2013 customisations, I had to change the logo url on SharePoint 2013 search center to point to one of the SharePoint 2007 site collection. Yes, you read that right, link to the SP 2007 site. Basically I was using the 2013 search to crawl through SP 2007 content to make best use of its search features.
I am not using any custom Masterpage, just trying to change the URL link by amending below line, but only work on home page and not on results.aspx. I know it can be changed if I use Custom masterpage, but in this scope no custom master page is being used.
<!--MS:<SharePoint:SPLinkButton runat="server" NavigateUrl="~sitecollection/" CssClass="ms-siteicon-a" ID="x7917ecc8c38d4bd69f58e338eab54c8c">-->