how to safely merge a git branch code example

Example 1: how to merge git branch to master

git checkout master
git pull origin master
git merge test
git push origin master

Example 2: git merge branch to master

$ git checkout master
Switched to branch 'master'
$ git merge iss53
Merge made by the 'recursive' strategy.
index.html |    1 +
1 file changed, 1 insertion(+)