Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/koji/daemon.py", line 1339, in runTask
    response = (handler.run(),)
  File "/usr/lib/python3.6/site-packages/koji/tasks.py", line 329, in run
    return koji.util.call_with_argcheck(self.handler, self.params, self.opts)
  File "/usr/lib/python3.6/site-packages/koji/util.py", line 258, in call_with_argcheck
    return func(*args, **kwargs)
  File "/usr/sbin/kojid", line 2040, in handler
    specfd.write(contents)
TypeError: write() argument must be str, not bytes