Updates were rejected because a pushed branch tip is behind its remote hint: counterpart. Check out this branch and integrate the remote changes code example

Example 1: git updates were rejected because the tip of your current branch is behind

git push -f origin master

Example 2: Updates were rejected because a pushed branch tip is behind its remote

// if this don't work
git pull origin FixForBug
git push origin FixForBug
// then, do this:
git push -f origin FixForBug