git copy master to branch code example

Example 1: copy branch to master

git checkout master.
git checkout branch_from_which_you_have_to_copy_the_files_to_master . (with period)
git add --all.
git push -u origin master.
git commit -m "copy from branch to master"

Example 2: git sync branch from master

git checkout test-branch 	//Checkout the branch you want to update
git merge master			//Merge all code from master to test-branch

// When your are done with test-branch you can merge all code into master branch
git checkout master 		// Make sure you are on master branch
git merge test-branch