Default behavior of “git push” without a branch specified

Question

I use the following command to push to my remote branch:

git push origin sandbox

If I say

git push origin

Answer 1

git push origin will push all changes on the local branches that have matching remote branches at origin As for git push

Works like git push , where is the current branch's remote (or origin, if no remote is configured for the current branch).

From the Examples section of the git-push man page