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Then, ask infra to set up an apache.org account: http://www.apache.org/dev/pmc.html#newcommitter . The UNIX group to request is "spamassassin".
Once they do this, they'll mail the private list with a mail from root/at/apache noting "Account created: Name (username)". The PMC chair then needs to check out https://svn.apache.org/repos/asf/infrastructure/trunk/subversion/authorization , edit the "asf-authorization" file, and add the new username to the "committers-X" (where "X" is the first letter of the new committer's username) and "spamassassin" groups. They now have r/w access to the SVN repositories.
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