Gitea's SSH rejection banner (what the grep matches on) is written to
stderr, but the probe piped stdout only via 2>/dev/null — so the grep
never saw it, on any peer, even after dropping the bogus 'info' arg in
be6c16d. Confirmed live on HOST2: the exact probe command against HOST1's
Gitea prints the banner correctly with 2>&1, empty with 2>/dev/null.
Also corrects the CHANGES entry, which claimed a .txz-based install that
was never wired up — actual distribution is git-clone + symlink, not
packaged.