#use new_branch
git fetch
git checkout new_branch
#add changes
git add .
#commit the changes
git commit -m 'some message'
#push to new branch
git push
#create pull request from git repo
#you can also merge from github/bitbucket using the merge button
#switch to master branch
git checkout master
#merge with new_branch
git merge new_branch
#push changes to master branch
git push