如何以编程方式git部分检出文件

Question

这就是我正在做的事情。使用npm脚本an example repo

添加预提交挂钩

"is-commitable": "git status | grep 'Changes to be committed:'",
"stash-pop": "git stash pop >> /dev/null",
"stash-unstaged": "git stash save -k --include-untracked 'unstaged-stash' >> /dev/null",
"check-commitable": "npm run is-commitable || (npm run stash-pop && exit 1)",
"lint-staged": "(eslint . --fix && git add .) || (npm run stash-pop && exit 1)",
"recheck-commitable": "npm run check-commitable",
"stash-linted": "git stash save 'linted-stash' >> /dev/null",
"stash-pop-unstaged": "git stash pop stash@{1}",
"stash-pop-linted": "git read-tree stash && git stash drop",
"clean-lint-staged": "(lint-staged >> /dev/null) || exit 0"

实施例

1. 有两行提交代码：

   line1
   line2
   

2. 进行一些更改：

   * line1-changed
   * line2-changed
   

3. 部分添加其中一个：

   - line1
   + line1-changed
   * line2-changed
   

4. 运行提交和预提交挂钩被触发

   • 藏匿-不分阶段

     - line1
     + line1-changed
     line2(changed part been stashed in unstaged-stash)
     

   • 棉绒阶

     - line1
     + line1-fixed
     line2(changed part been stashed in unstaged-stash)
     

   • 藏匿-LINTED

     line1(changed and fixed part been stashed in linted-stash)
     line2(changed part been stashed in unstaged-stash)
     

   • 藏匿-POP-不分阶段

     line1(changed and fixed part been stashed in linted-stash)
     * line2-changed
     

   • 藏匿-POP-LINTED

     - line1
     + line1-fixed
     * line1-changed
     * line2-changed
     

   • 清洁绒布上演

     - line1
     + line1-fixed
     * line2-fixed
     

问题

最后两步并不完美。

预期结果

我想得到

- line1
+ line1-fixed
* line2-changed

实际结果

但现在我只能得到

- line1
+ line1-fixed
* line1-changed
* line2-changed

或

- line1
+ line1-fixed
* line2-fixed

需要帮助

那么我能找到一种方法来以编程方式git checkout一个文件只有分阶段的行吗？

或者放弃最后一步找到修复最后第二步的方法