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part I: Add new branch step decomposition
The first step: git branch to view the current branch situation
git branch //View the current branch situation
Step 2: git branch branch name, create a new branch of your own
git branch branch name // create a new branch of its own
Step 3: git checkout branch name, switch to the new branch
git checkout branch name // switch to the new branch
Step 4: git branch, check again
Step 5: git push -u origin branch name, sync to github online
git push -u origin branch name // Synchronize the new branch online
Step 6: Perform add tracking and commit submission
Step 7: Check the online github repository, the new v2 branch is created! ! !