dgit lets you clone, commit, and push to the Debian archive. Other Developers don't even need to know you're using git, but if they use dgit you share history with them.
The talk will cover the basic design choices, include a demo, and go on to the current status and future plans.
http://www.chiark.greenend.org.uk/~ijackson/2014/debconf-dgit-talk/slides.pdf and .../talk.txt
URLs: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git-manpage/dgit.git/dgit.1 packages.debian.org/dgit