SourceTreeでコミット間の差分ファイルを圧縮しないで取り出す方法 ref: http://qiita.com/youthkee/items/8579c7a963c24bd4e655

export_diff.sh

#!/bin/sh
git checkout-index -f --prefix=archive/ $1 `git diff --name-only $1 $2`

export_diff2.sh

#!/bin/sh
today=`date +"%Y%m%d"`
git checkout-index -f --prefix=../archive/$today/ $1 `git diff --name-only $1 $2`

file0.txt

#!/bin/sh
git checkout-index -f --prefix=archive/ $1 `git diff --name-only $1 $2`

file1.txt

chmod +x export_diff.sh

file2.txt

#!/bin/sh
today=`date +"%Y%m%d"`
git checkout-index -f --prefix=../archive/$today/ $1 `git diff --name-only $1 $2`