I'm getting visualdiff failures due to a template on zhwiki which has since been fixed. How can I get visualdiff to pull a new copy of the template?
Talk:Parsing/Visual Diff Testing
How do I refresh the article snapshot?
If it is just a simple fix to the template, we can simple make the corresponding edit on the template after making the db read-write. But, in the general case, updating the database of (titles & used templates) is non-trivial.
https://phabricator.wikimedia.org/T120345#2182017 has details of how we populated the db for the various wikis to kick this off.