清理无效的远程追踪分支
问题
如题，当在 Git 远端删除了一个分支，这时本地并不知道此操作，并不会同步。
此时在本地使用 git branch -a 依旧可以查看已被删除的分支，但是我们并不能移除它。
shell
λ git branch -a
develop
master
remotes/origin/@feat/heatMap # 已删除
remotes/origin/@feat/factoryAMap # 已删除
remotes/origin/@feat/createdPolygon # 已删除
当分支大多并且想要知道远端链接情况的时候，可以通过 git remote show [origin] 方法查看链接关系
git remote show origin 详情
已删除的分支会进行 stale 标注
shell
λ git remote show origin
info: detecting host provider for 'https://github.com/xxx/xxx.git'...
info: detecting host provider for 'https://github.com/xxx/xxx.git'...
* remote github
Fetch URL: https://github.com/xxx/xxx.git
Push URL: https://github.com/xxx/xxx.git
HEAD branch: master
Remote branch:
develop tracked
master tracked
refs/remotes/origin/@feat/createdPolygon stale (use 'git remote prune' to remove)
refs/remotes/origin/@feat/factoryAMap stale (use 'git remote prune' to remove)
refs/remotes/origin/@feat/heatMap stale (use 'git remote prune' to remove)
Local ref configured for 'git push':
develop pushes to develop (up to date)
master pushes to master (up to date)
解决方法
通过 git remote show [origin] 方法查看链接关系后，可使用 git remote prune [origin] 方法来清除无效链接。
[origin]需修改为remote别名
shell
λ git remote prune origin
info: detecting host provider for 'https://github.com/xxx/xxx.git'...
info: detecting host provider for 'https://github.com/xxx/xxx.git'...
Pruning origin
URL: https://github.com/xxx/xxx.git
* [pruned] origin/@feat/createdPolygon
* [pruned] origin/@feat/factoryAMap
* [pruned] origin/@feat/heatMap