Feature request: Push to default branch if no --branch-name flag is supplied

**Describe the solution you'd like**
Currently we have to specify branch in which changes needs to be pushed . But in our case we have around 100s of repo and we want to push same content on. different branches of repo (As a standard we have made those branches as default )

**Describe alternatives you've considered**
We can do it via creating PR , but in our case we want to force these changes donot want PR's

**Additional context**
Add any other context or screenshots about the feature request here.