Oh………………………… Big mistake. I might advertised too soon.
I saw changes were pushed in master, so I thought the next version
(which was 2.7.1) would be the one which will include the fix.
But as pointed out on
https://security-tracker.debian.org/tracker/CVE-2016-2324 no versions
including the fixes were released yet, and even 2.7.3 still include
path_name(). I didn’t checked the code (Sorrrry).
So the only way to fix it is to draw your compilers and compile the
current master branch at https://git.kernel.org/cgit/git/git.git/.
Or do like github did by using the patches at
http://thread.gmane.org/gmane.comp.version-control.git/286253 and
http://thread.gmane.org/gmane.comp.version-control.git/286008
