A useful script that displays local & remote branches, what are in sync and what need merging,
and so on, like so:

Local branch: heads/master
[x] in sync with remote
Remote branch: origin/master (git@github.com:account/project.git)
[x] in sync with local
Feature branches:
[x] ticket_827 is merged in
[ ] ticket_831 is NOT merged in (1 commit ahead; 18 commits behind)
 - [dependencies] Depend on library X, version Y [bfda321]

$ make git-alias
(makes $ git wtf work)

$ make git-sh-alias
(makes master!repo> wtf work in git-sh console)

or just:

$ make
to perform both actions.

Then:
sudo make install
(obviously, installs git-wtf script into your /usr/local/bin directory)