You can clone with
HTTPS or Subversion.
Just use <!--nextpage--> in any post to split the post in 2 or more pages then if you go the page 2 of the paginated post the sidebar will go below comments section, breaking the layout.
Thank you for letting me know, @ktm11!
Can you provide me with a link to a site where this issue occurs?
I could not reproduce it on my demo site.