<!-- Retrieve metadata for all the packages specified under packageNames -->
    <target name="retrievePkg">
      <mkdir dir="${sf.pkgName}"/>
      <sf:retrieve username="${sf.username}" password="${sf.password}" sessionId="${sf.sessionId}" serverurl="${sf.serverurl}" maxPoll="${sf.maxPoll}" retrieveTarget="${sf.pkgName}" packageNames="${sf.pkgName}"/>
    </target>