You can see the revision numbers of the most recent commit for each tag by adding the option -v
:
svn ls -v ^/tags
If you want to process the results, I recommend using the command line svn info --xml --depth=immediates ^/tags
and parsing the XML document with a script. For example, the following python script prints the names of the tags with their revision number:
#! /usr/bin/env python3
import sys, lxml.etree
document = lxml.etree.parse(sys.stdin.buffer)
for entry in document.xpath('//entry[@kind="dir"]'):
print(entry.xpath('string(@path)'), entry.xpath('string(commmit/@revision)'))