how to merge your branch with a new master branch code example
Example 1: 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(+)
Example 2: merge branch to master
$ git checkout master
$ git branch new-branch
$ git checkout new-branch
# ...develop some code...
$ git add –A
$ git commit –m "Some commit message"
$ git checkout master
$ git merge new-branch