After the BZ migration, bugzilla urls will redirect to maniphest tasks. However, most open patches will still link to Bugzilla with "Bug: ###" footer. Ideally the gerrit notification bot would automatically follow those redirects and comment on the proper maniphest task so I don't have to update all my open patches.
@Qgil, it seems we did not manage to meet in IRC today :-)
Not sure if this task is worth it.
But if we want that really need it and we have a fixed mapping between bugzilla bug number and phabricator task number, I can hook something up.
Do we really need it?
Do we have a fixed mapping between bugzilla bug numbers and phabricator task number?
I'm not sure we need the Gerrit notification bot to get involved. I assume we'll set up redirects from bugzilla.wikimedia.org and/or provide a way to find the phabricator ticket from the bugzilla page. That should be enough. The bot could use http to follow the redirect and/or bugzilla api to read the comment or a meta data field (wherever the url is left if we don't use a redirect).