我已经按照文档配置了Jenkins git pull request插件:https://wiki.jenkins-ci.org/display/JENKINS/GitHub+pull+request+builder+plugin,但是构建返回以下错误信息:
ERROR: Couldn't find any revision to build. Verify the repository and branch configuration for this job.
如果我将“Branch Specifier”留空,Jenkins会遍历我仓库中的所有PR(包括已关闭的)。如何强制它只构建开放的PR?