“unqualified destination” error with git subtree push

I just created a new Heroku app and I don’t manage to push the subtree folder backend of my repo (branch staging) to the newly created app myapp-staging (no branch yet).

Here is how I push the subtree:

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  • git push heroku `git subtree split --prefix=backend staging`:master

    An the related error:

    error: unable to push to unqualified destination: master
    The destination refspec neither matches an existing ref on the remote nor
    begins with refs/, and we are unable to guess a prefix based on the source ref.
    error: failed to push some refs to 'git@heroku.com:myapp-staging.git'

    I tried git fetch heroku. What does this “unqualified destination” mean? Shouldn’t this command create the distant branch?

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  • 2 Solutions collect form web for ““unqualified destination” error with git subtree push”

    Ok, got an idea thanks to http://makingsoftware.wordpress.com/2013/02/16/using-git-subtrees-for-repository-separation/

    I tried:

    git subtree split --prefix=bakcend -b test
    git push heroku test:master

    And it worked like a charm. May the problem would be with the creation of the branch using the subtree command…

    As discussed here, you can push to refs/heads/master to fix this problem, after which you can change back to master, although I’m still not entirely sure /why/ this works.

    # run this once
    git push origin master:refs/heads/master
    # now you can use this forever
    git push origin master
    Git Baby is a git and github fan, let's start git clone.