On https://jenkins.freebsd.org/job/FreeBSD_DOC/1023/changes The "Path in Repository" and "(diff)" links have a repeated "/head". So the first is http://svnweb.freebsd.org/doc/head/head/en_US.ISO8859-1/books/porters-handbook/versions/chapter.xml but should be http://svnweb.freebsd.org/doc/head/en_US.ISO8859-1/books/porters-handbook/versions/chapter.xml