The developer's walkthrough <http://doc.sagemath.org/html/en/developer/walk_through.html> says in its third paragraph:
You can alternatively fork and create a pull request at github <http://github.com/sagemath/sage> which will automatically fetch your code and open a ticket on our trac server. Did this work in the past? Is it planned to work again or should the statement be removed from the guide? -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.