Real desktop reconnect log excerpts (display names and unrelated runtime metadata omitted).

BASE
ssh.environment.ensure.start
    alias: 'lima-sandbox',
    hostname: '127.0.0.1',
    username: 'user',
    port: 40001,
stderr: 'ssh: connect to host 127.0.0.1 port 40001: Connection refused\r\n',

HEAD
ssh.environment.ensure.start
    alias: 'lima-sandbox',
    hostname: '127.0.0.1',
    username: 'user',
    port: null,
ssh.environment.ensure.succeeded
    alias: 'lima-sandbox',
    hostname: '127.0.0.1',
    username: 'user',
    port: 40002,

Terminal control after changing alias Port to 40002:
$ ssh -G -l user lima-sandbox
user user
hostname 127.0.0.1
port 40002
$ ssh -l user lima-sandbox 'printf "terminal SSH connected after port change\n"'
terminal SSH connected after port change