Thanks for implementing the 'reset to original URL for pinned tabs' via cmd-click.
In addition it would be great if we could set a pinned tab to the current URL where you've navigated to.
E.g. sometimes when pinning a website like Readwise Reader that has sections like inbox, shortlist, archive, feeds etc you might conclude that feeds is the prefered starting page for that website while you've set inbox to be the starting page.
A user can update a pinned tab via the contextual menu with a command like 'Set pinned tab to current page'. This would save clicks to unpin the tab and repin it with the correct URL.