Objective: To add a new file (the code) on a remote branch
1, clone branch
git clone -b branch url
cd to the folder, add files to change directory
2, create a new branch and switch
git checkout -b dev (new local branch)
3, add files to the branch (local)
git add file name
4, submitted
the commit -m Git ' description '
5, push the remote branch
git push origin local branch (new): remote branch