Not just git; any DVCS that can quickly be applied to an existing source tree will do. Try Bazaar, Mercurial. I'm personally using Bazaar and find it a joy to use. (Of course, if the project has a git/bzr/hg repository, that tool will be the most convenient.)

In reply to Re^2: submitting a patch for a directory by Anonymous Monk
in thread submitting a patch for a directory by nglenn

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