dgit is a tool which allows you to dgit clone any package in Debian, and get a git tree. You can work on the package in git, and when you are ready do dgit build and dgit push to upload. Other dgit users see your git history.
dgit is particularly useful for NMUers and downstreams.
URLs: http://www.chiark.greenend.org.uk/~ijackson/2015/debconf-dgit-talk/talk.txt http://www.chiark.greenend.org.uk/~ijackson/2015/debconf-dgit-talk/slides.pdf http://www.chiark.greenend.org.uk/ucgi/~ijackson/git/talk-2015-debconf-dgit.git/