$ git push origin TRUNK-3814
Enter passphrase for key '/c/Users/kaweesi joseph/.ssh/id_rsa':
To git@github.com:k-joseph/openmrs-core.git
 ! [rejected]        TRUNK-3814 -> TRUNK-3814 (non-fast-forward)
error: failed to push some refs to 'git@github.com:k-joseph/openmrs-core.git'
hint: Updates were rejected because the tip of your current branch is behind
hint: its remote counterpart. Merge the remote changes (e.g. 'git pull')
hint: before pushing again.
hint: See the 'Note about fast-forwards' in 'git push --help' for details.