How do you get the Git repository’s name in some Git repository?

When you are working in some Git directory, how can you get the Git repository name in some Git repository? Are there any Git commands?

# I did check out bar repository and working in somewhere 
# under bar directory at this moment such as below.

$ git clone git://github.com/foo/bar.git
$ cd bar/baz/qux/quux/corge/grault # and I am working in here!
$ git xxx # <- ???
bar