Check whether the remote branch exists during sync
What does this MR do and why?
Resolve #6 (closed)
在 GitLab 远端合并分支后，分支随即会被删除，但本地的 branch.remote 依旧有值，这导致 mono sync 时会报错找不到远程分支。
Screenshots or screen recordings
Screenshots are required for UI changes, and strongly recommended for all other merge requests.
How to set up and validate locally
由 路志远 编辑于