Stem can't fetch hidden service descriptors with descriptor ID.
https://gitweb.torproject.org/torspec.git/tree/control-spec.txt#n1548
"HSFETCH" SP (HSAddress / "v" Version "-" DescId)
*[SP "SERVER=" Server] CRLF
Control-spec states that HSFETCH can be done with a specific descriptor ID, but because stem enforcesa address check with stem.util.tor_tools.is_valid_hidden_service_address()
this can't be done.
Trac:
Username: moonsikpark