Traceback (most recent call last):
  File "/sbin/rpmconf", line 63, in <module>
    main()
  File "/sbin/rpmconf", line 60, in main
    rconf.run()
  File "/usr/lib/python3.4/site-packages/rpmconf/rpmconf.py", line 90, in run
    self._handle_package(pkg_hdr)
  File "/usr/lib/python3.4/site-packages/rpmconf/rpmconf.py", line 264, in _handle_package
    tmp.format(conf_file, "rpmnew"))
  File "/usr/lib/python3.4/site-packages/rpmconf/rpmconf.py", line 273, in _handle_rpmnew
    if filecmp.cmp(conf_file, other_file):
  File "/usr/lib64/python3.4/filecmp.py", line 51, in cmp
    s1 = _sig(os.stat(f1))
FileNotFoundError: [Errno 2] No such file or directory: '/etc/mock/default.cfg'

Everytime I do sudo rpmconf -a I get this error ^^^

Looks like after upgrade I got broken link: 

ll /etc/mock/default.cfg
lrwxrwxrwx 1 root root 20 Oct  8  2014 /etc/mock/default.cfg -> fedora-20-x86_64.cfg

Since this is a symlink, rpmconf could include this in the list of exceptions or handle it appropriately (re-symlink it perhaps)?