Editing Git (section)

== Default Push Action ==
 warning: You did not specify any refspecs to push, and the current remote
 warning: has not configured any push refspecs. The default action in this
 warning: case is to push all matching refspecs, that is, all branches
 warning: that exist both locally and remotely will be updated.  This may
 warning: not necessarily be what you want to happen.
 warning: 
 warning: You can specify what action you want to take in this case, and
 warning: avoid seeing this message again, by configuring 'push.default' to:
 warning:   'nothing'  : Do not push anything
 warning:   'matching' : Push all matching branches (default)
 warning:   'tracking' : Push the current branch to whatever it is tracking
 warning:   'current'  : Push the current branch

 git config --global push.default matching