TypeError: argument of type 'ssl.SSLError' is not iterable

https://sentry.softwareheritage.org/organizations/swh/issues/105697/?referrer=phabricator_plugin

SSLError: [SSL: DECRYPTION_FAILED_OR_BAD_RECORD_MAC] decryption failed or bad record mac (_ssl.c:2488)
(4 additional frame(s) were not displayed)
...
  File "http/client.py", line 595, in _readinto_chunked
    n = self._safe_readinto(mvb)
  File "http/client.py", line 640, in _safe_readinto
    n = self.fp.readinto(mvb)
  File "socket.py", line 589, in readinto
    return self._sock.recv_into(b)
  File "ssl.py", line 1052, in recv_into
    return self.read(nbytes, buffer)
  File "ssl.py", line 911, in read
    return self._sslobj.read(len, buffer)

GitProtocolError: [SSL: DECRYPTION_FAILED_OR_BAD_RECORD_MAC] decryption failed or bad record mac (_ssl.c:2488)
(2 additional frame(s) were not displayed)
...
  File "dulwich/client.py", line 2120, in fetch_pack
    progress,
  File "dulwich/client.py", line 620, in _handle_upload_pack_tail
    SIDE_BAND_CHANNEL_PROGRESS: progress,
  File "dulwich/client.py", line 496, in _read_side_band64k_data
    for pkt in pkt_seq:
  File "dulwich/protocol.py", line 290, in read_pkt_seq
    pkt = self.read_pkt_line()
  File "dulwich/protocol.py", line 242, in read_pkt_line
    raise GitProtocolError(e)

TypeError: argument of type 'ssl.SSLError' is not iterable
  File "swh/loader/core/loader.py", line 406, in load
    more_data_to_fetch = self.fetch_data()
  File "swh/loader/git/loader.py", line 311, in fetch_data
    if msg in e.args[0]:

Loading failure, updating to `failed` status

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Migrated from T4744 (view on Phabricator)