GitHub added the notion of Organization some time ago.
When you go to https://github.com/jbosgi you will now see the dashboard for this (new) organization.
All repositories that were formerly available under this URL are now on my private account https://github.com/tdiesler
How you should work
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David, technically nothing should have changed for you (i.e. your local git repo urls should work as before). However, I'd prefer to use 'jbosgi' as the 'upstream' and not the 'origin' remote location. This would be in line with how folks work on AS.
Sounds good, Thomas.