Wrong commit message. What to do now?

[Karl Fogel <kfogel@red-bean.com>]

I committed rev 100812 into trunk.  It's still fresh.  I accidentally
used the wrong log message -- the log message should have been:

  * lisp/bookmark.el (bookmark-show-annotation): Ensure annotations show,
    e.g. in Info bookmarks, by using `switch-to-buffer-other-window'.
    Patch by Thierry Volpiatto (Bug#6444).

The ChangeLog is correct; just the bzr commit message is wrong.  Does
anyone know if there's anything that can be done about this?  

Also, I had forgotten: are we not supposed to be committing to trunk
right now?

(Aside: it feels somewhat hard to be a drive-by maintainer these days,
which is what I am.  I try to be responsible about bookmark, saveplace,
and mail-hist stuff, but I can't follow project status in depth.  The
fact that trunk sometimes is, and sometimes is not, the right place to
push changes makes this role a bit more difficult.  Not unworkably
difficult, but it does lead to mistakes sometimes.)

-Karl