git-link breaks on GitLab branches #103

Hi, I use this on GitLab repos quite frequently and have not experienced any issues.

What version are you using and are you setting git-link-default-branch or, git-link.branch via git?

With version 0.8.3 I set git-link-default-branch to another branch and did not have any issues. Is it possible that the file you were linking to did not exist on that branch?