Move GetDefaultBranch and GetDefaultBranchShort to gitserver client (!35804) · Merge requests · Administrator / sourcegraph · GitLab

Administrator requested to merge mlw-move-GetDefaultBranch-to-gitserver-client into main May 20, 2022

Created by: mollylogue

Part of the ongoing work for https://github.com/sourcegraph/sourcegraph/issues/33280

Test plan

Unit tests need to pass