You are using magit with your git, right?

;; full screen magit-status

(defadvice magit-status (around magit-fullscreen activate)
  (window-configuration-to-register :magit-fullscreen)
  ad-do-it
  (delete-other-windows))

(defun magit-quit-session ()
  "Restores the previous window configuration and kills the magit buffer"
  (interactive)
  (kill-buffer)
  (jump-to-register :magit-fullscreen))

(define-key magit-status-mode-map (kbd "q") 'magit-quit-session)

This code makes magit-status run alone in the frame, and then restores the old window configuration when you quit out of magit.

No more juggling windows after commiting. It's magit bliss.