https://github.com/magit/magit-tramp.git
git clone 'git://github.com/magit/magit-tramp.git'
Git method for Tramp
very experimental, don't rely on it
examples of use:
(eval-after-load 'magit-tramp
'(add-to-list 'magit-tramp-hosts-alist (cons "magit"
(expand-file-name
"/Data/yann/Projects/git/magit/"))))
(find-file "/git:HEAD@magit:/COPYING")
(find-file "/git:HEAD@magit:/")
(find-file "/git:master@magit:/")
(find-file "/git:maint~42@magit:/")
(ediff-directories "/git:maint@magit:/" "/git:master@magit:/" nil)