Git，推向远程

Question

Lets suppose i am in a local ABC with branches branch_A and branch_B .

From repo_A , what are the differences between:

 - git push origin
 - git push origin branch_A
 - git push origin branch_A:branch_A

The reason for question is the following sequence of events, i find to be surprising:

11:05:56 ~/blah $ git push origin
Counting objects: 31, done.
Delta compression using up to 8 threads.
Compressing objects: 100% (13/13), done.
Writing objects: 100% (17/17), 1.28 KiB, done.
Total 17 (delta 10), reused 0 (delta 0)
To ssh://git@mygit/myrepo.git
   141fc0d..d42c3b6  branch_B -> branch_B    // While i was in branch_A

11:06:02 ~/blah $ git branch
  branch_A
* branch_B 

Answer 1

The default behaviour of behaviour of git push origin (if you haven't customized the config option push.default ) is to push all "matching" branches. That means that each local branch is pushed to one with the same name in origin so long as a branch with that name already exists in origin . In this case, it seems that you have a branch_B branch in origin as well as locally.

The two other variants you quoted:

git push origin branch_A
git push origin branch_A:branch_A

.... are actually equivalent - if you don't include the : in the refspec to separate the source name from the destination name, it assumes that you mean the same name in the source and destination.