Don't show remote branch if ambiguous due to tag
Don't show remote branch if ambiguous due to tag

If there is a tag with the same name as the remote branch, `git
symbolic-ref --short HEAD` will display `heads/$branchname` instead of a
simple `$branchname`.

This patch will drop the `heads/` from the tracking branch check.

dritter/powerlevel9k,dritter/powerlevel9k