svn mergeinfo — Query merge-related information. See the section called “Mergeinfo and Previews” for details.
Query information related to merges (or potential
            merges) between SOURCE-URL and
            TARGET.  If
            the --show-revs option is not provided,
            display revisions which have been merged
            from SOURCE-URL
            to TARGET.  Otherwise, display
            either merged
            or eligible revisions as specified by
            the --show-revs option.