[Koha] Github mirror question

Hi all, I'm curious about something on Github. Anyone have any ideas why my patches are all back in 2010: https://github.com/Koha-Community/Koha/commits?author=nengard I've done at least 10 a release because of the help files I edit. How is this mirror updated? I'm trying to learn a bit more about Github just out of professional curiosity. Thanks Nicole