I believe it is failing on the line:

  File "/usr/lib/python3.10/site-packages/pyrpkg/lookaside.py", line 298, in upload
    if self.remote_file_exists(name, filename, hash):
  File "/usr/lib/python3.10/site-packages/pyrpkg/lookaside.py", line 259, in remote_file_exists
    self.raise_upload_error(status)

So maybe the file already exists in the cache?  But then, sources has not been updated, and if I try 

fedpkg local it will attempt to build the old version 1.8.1, not the new 1.9.0.