Git stash is used to temporarily save changes that are not ready to be committed or pushed to a branch.
And use git stash pop or git stash apply to restore it.
It was designed to help modify other files temporarily.
That’s a creative feature.
But……
Why don’t use git checkout -b [newbranch] to create and check out to a new branch to do my work?
To untangle the paradox, we need try it first.
git init
vim test1.txt
git add .
git commit -m "commit"
git checkout -b dev
vim test2.txt
git checkout master
ls
Run this command in a blank dictionary, you can find test2.txt.
Wow, amazing.
A file test2.txt belonging to the dev branch appeared in the master branch.
So, that’s why we need git stash.
Any file change will appear in all branches.