specfile: package source are now located at github.com
    
      Upstream (Artifex) has decided to move their 'urw-core35-fonts' git
      repository to github.com, and rename it to 'urw-base35-fonts':
    
      >> https://github.com/ArtifexSoftware/urw-base35-fonts
    
      The sources can be now easily download with correct filename with:
      $ spectool -g *.spec