gic{init,clone} --separate-git-dir is supported only since 1.7.5

[roidelapluie]

Without this commit the update() function of a submodule does not work
in CentOS 6.

[Byron]

Thank you !
I did my best to figure out when the feature was introduced, and found it difficult to find good documentation about it in the changelog.
Let's hope that patch-level 5 will work everywhere.

[roidelapluie]

I did a git blame on https://github.com/git/git/blob/01977f46cb48e2894e335667eaabce274174ac5e/builtin/clone.c

Which shows git/git@b57fb80

Which is tagged 1.7.5.

In CentOS 6:
$ git --version
git version 1.7.1

[Byron]

Thanks again for digging deeper than I did ! With that information I believe there is certainty that GitPython can now make the correct decisions.