[CentOS-mirror] Best Practice to sync only certain versions

We are considering only syncing 4 & 5 on our internal mirror. Below is a script that was on the CentOS Mirror site. Would I be able to use this script to sync only 4 or 5? Or, is there a better way to accomplish this?

Regards,

Todd

File: sync_centos.sh

------------------------------

#!/bin/sh

rsync="/usr/local/bin/rsync -aqHz --delete --delay-updates --bwlimit=10240"

# this should be auto-selected, but the centos mirror script doesn't

# support selection by a specific protocol (i.e., rsync)

mirror=RSYNCURLGOESHERE::mirrors/centos

ver=4

archlist="i386 x86_64"

baselist="os updates"

local=/opt/mirrors/centos

for arch in $archlist

do

for base in $baselist

do

remote=$mirror/$ver/$base/$arch/

$rsync $remote $local/$ver/$base/$arch/

done

done