我正在尝试使用我创建的虚拟文件夹和实际的生产git repo来学习git。我不明白在什么情况下会抛出以下错误：

error: Your local changes to the following files would be overwritten by checkout:
        index.html
Please commit your changes or stash them before you switch branches.
Aborting

字符串
下面是我在虚拟git文件夹上执行的操作序列：

PS C:\Users\thepav\Desktop\git project> git status
On branch feature-a
Your branch is up to date with 'origin/feature-a'.

Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git restore <file>..." to discard changes in working directory)
        modified:   index.html

no changes added to commit (use "git add" and/or "git commit -a")

    PS C:\Users\thepav\Desktop\git project> git checkout main
    error: Your local changes to the following files would be overwritten by checkout:
            index.html
    Please commit your changes or stash them before you switch branches.
    Aborting

型
我试图通过修改一个文件在Prod git repo中重现同样的行为，但这是我得到的：

$ git status
On branch develop
Your branch is up to date with 'origin/develop'.

Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git restore <file>..." to discard changes in working directory)
        modified:   application/ice.ini.php

no changes added to commit (use "git add" and/or "git commit -a")
$ git checkout master
M       application/ice.ini.php
Switched to branch 'master'

型
问题是为什么prod git repo不会抛出错误？