I've tried that as well. For me it was really difficult as I use the current changes quite a lot, and it makes it a lot more difficult to grasp the work I've done so far without having a meaningful change set.
you can use separate dev/release branches, and do something like "git diff master" (if you dont git push, you don't even need a separate branch, git diff origin/master works, but you lose half the point of frequent commits then)
