FWIW, http://gitimmersion.com/ has some similar things, the win32 equivalent of which might be

doskey gs=git status $*
doskey ga=git add $*
doskey gb=git branch $*
doskey gc=git commit $*
doskey gd=git diff $*
doskey go=git checkout $*
doskey gk=start "" gitk --all $*
doskey gx=gitx --all $*
doskey gh=git log  --pretty=format:"%h %ad | %s%d [%an]" --graph --dat
+e=short
doskey got=git $*
doskey get=git $*
[download]

A more readable fork of that tutorial is http://githowto.com/