With this error message Gerrit rejects to push a commit for code review if the specified target branch does not exist.
To push a change for code review the commit has to be pushed to the
project’s magical refs/for/'branch' ref (for details have a look at
Create Changes).
If you specify a non-existing branch in the refs/for/'branch' ref
the push fails with the error message 'branch … not found'.
To fix this problem verify
-
that the branch name in the push specification is typed correctly (case sensitive) and
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that the branch really exists for this project (in the Gerrit Web UI go to 'Projects' > 'List' and browse your project, then click on 'Branches' to see all existing branches).
If it was your intention to create a new branch you can either
-
bypass code review on push as explained here or
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create the new branch in the Gerrit Web UI before pushing (go to 'Projects' > 'List' and browse your project, in the 'Branches' tab you can then create a new branch).
Please note that you need to be granted the 'Create reference' access to create new branches.
Part of Gerrit Error Messages