How do I make a "Theme" ticket register as a "feature" when creating git branch?

[Alexander Bird]

I have Jira v6.2#6252-sha1:aa34325 and Stash v2.12.1 ; They are linked as trusted applications.

I have the main repository configured to use a branching model, with all four types of branches selected: bugfix, feature, hotfix, release.

I added a new issue type in Jira called "Theme", and when a developer selects the "Create branch" link from the Development Dashboard, it defaults to the new branch being a "bugfix". Where do I change the default branch type for an issue type? I want it to default to "feature".

[Alexander Bird]

This is a duplicate: https://answers.atlassian.com/questions/234975/modifying-jira-stash-branching-model-mappings