Traceback (most recent call last):
  File "/usr/share/koji-hub/kojixmlrpc.py", line 235, in _wrap_handler
    response = handler(environ)
  File "/usr/share/koji-hub/kojixmlrpc.py", line 278, in handle_rpc
    return self._dispatch(method, params)
  File "/usr/share/koji-hub/kojixmlrpc.py", line 315, in _dispatch
    ret = koji.util.call_with_argcheck(func, params, opts)
  File "/usr/lib/python3.6/site-packages/koji/util.py", line 263, in call_with_argcheck
    return func(*args, **kwargs)
  File "/usr/share/koji-hub/kojihub.py", line 5451, in cg_import
    return importer.do_import(metadata, directory)
  File "/usr/share/koji-hub/kojihub.py", line 5476, in do_import
    self.prep_outputs()
  File "/usr/share/koji-hub/kojihub.py", line 5843, in prep_outputs
    contents = fp.read(8192)
  File "/usr/lib64/python3.6/encodings/ascii.py", line 26, in decode
    return codecs.ascii_decode(input, self.errors)[0]
UnicodeDecodeError: 'ascii' codec can't decode byte 0x8b in position 133: ordinal not in range(128)