git remote shows as @a

[Winston Nolan]

hello

in bash oh-my-git works great, and show my remote correctly. However, in zsh it shows the remote as @a
what can be wrong with that?

[Winston Nolan]

I have tracked the code down to this Line
https://github.com/arialdomartini/oh-my-git-themes/blob/master/oppa-lana-style.zsh-theme#L131

But, that all looks fine. In the bash version, that code works fine

EDIT:
On closer inspection I think the bug originates here
https://github.com/arialdomartini/oh-my-git/blob/master/base.sh#L72

In my zsh shell I also get @a but in a bash shell I correctly get remote/branch

SOLUTION:
writing it like this works

git rev-parse --symbolic-full-name --abbrev-ref '@{upstream}' 2> /dev/null;

The guys from #zsh on irc.freenode.net was kind enough to point me to this:
.zprezto/modules/environment/init.zsh

setopt BRACE_CCL          # Allow brace character class list expansion.

disabling that, also, resolved the issue

I'm closing this issue for now