how to assign a particular branch to git code example

Example 1: git switch branch

git switch 

git checkout 

Example 2: how to switch branches in git

- git checkout xyz =
                checks out the branch, switches to the branch.
- git checkout -b  =
                creates a new branch and switches to it.
- git merge  =
                this command takes changes from the given branch,
                and merges with the current branches we are on.