Is there a way to get the git root directory in one command?

Question

Mercurial has a way of printing the root directory (that contains .hg) via

hg root

Is there something equivalent in git to get the director

Answer 1

alias git-root='cd \`git rev-parse --git-dir\`; cd ..'

Everything else fails at some point either going to the home directory or just miserably failing. This is the quickest and shortest way to get back to the GIT_DIR.