如果已经在ECLIPSE中CLONE了GIT的项目，这时当GIT中又新建了项目，ECLIPSE无法切换到这新建的项目，解决办法：
In the Git Repositories view:
- Right-click the repository and choose Fetch from Upstream
- If the new branch will not shown up below Branches/Remote Tracking, you have to configure fetch:
- Right-click the fetch node below Remotes/origin and choose Configure Fetch...
- In the Configure Fetch make sure there is only the single Ref mapping (assuming the remote is named
origin) +refs/heads/*:refs/remotes/origin/*:
这时再次Fetch from upstream，则新建的项目再次重现：Git Repositories View-->Branches-->Remote Checking中。
双击新的分支，选：Check out as New Local Branch即可。
https://stackoverflow.com/questions/47390703/how-do-i-get-a-new-branch-to-show-up-in-eclipse-git-remote-tracking/47391183