With power shell:
$path = (([Xml] (svn log --xml $Url --verbose --username $Username --password $Password)).Log.LogEntry.Paths.Path | ? { $_.action -eq 'A' -and $_.kind -eq 'dir' -and $_.InnerText -like '*tags*'} | Select -Property @( @{N='date'; E={$_.ParentNode.ParentNode.Date}}, @{N='path'; E={$_.InnerText}} )| Sort Date -Descending | Select -First 1).path
Where $ Url is the URL of your tags
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