rename master to main git code example

Example 1: git rename master to main

$ git branch -m master main

Example 2: rename branch to main

$ git branch -m master main

or create a new one

$ git checkout -b main

Example 3: rename branch to main

$ git push -u origin main

Example 4: rename master to main

// must already have added somethign to HEAD
$ git branch -m master main