How to create/merge two branches in git?

Question

git

Hello!
The problem is this, there are 2 master and test branches in the north. Downloading to a local server. Create a new branch test2.
git checkout tes2after we replace the files with a regular copy in Windows
It turns out that test2 also sees these files as native, when trying to merge Already Up-to-date
При попытки git pull origin test2in test 2, also Already Up-to-date.
It turns out that there are ready-made changes that need to be uploaded to test2 and that git understands them for merge with test
How to do this? What do you advise?

Answer 1

read this and you will understand

Answer 2

the answer is easily found by a search engine