svnadmin setlog — Set the log message on a revision.
Set the log message on
revision REVISION to the
contents of FILE.
This is similar to using svn propset
with the --revprop option to set the svn:log property
on a revision, except that you can also use the option
--bypass-hooks to avoid running any pre-
or post-commit hooks, which is useful if the modification
of revision properties has not been enabled in
the pre-revprop-change hook.
Revision properties are not under version control, so this command will permanently overwrite the previous log message.