下面是设置了之后及报错的信息的截图：
参数化构建传入变量.png
git插件引用变量.png
报错信息.png
报错信息：
hudson.plugins.git.GitException: Command "git fetch --tags --progress --prune -- origin +refs/heads/${Build_on_tag}:refs/remotes/origin/${Build_on_tag}" returned status code 128:
stdout:
stderr: fatal: Couldn't find remote ref refs/heads/${Build_on_tag}
at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandIn(CliGitAPIImpl.java:2430)
at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandWithCredentials(CliGitAPIImpl.java:2044)
at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.access$500(CliGitAPIImpl.java:81)
at org.jenkinsci.plugins.gitclient.CliGitAPIImpl$1.execute(CliGitAPIImpl.java:569)
at jenkins.plugins.git.GitSCMFileSystem$BuilderImpl.build(GitSCMFileSystem.java:361)
at jenkins.scm.api.SCMFileSystem.of(SCMFileSystem.java:197)
at jenkins.scm.api.SCMFileSystem.of(SCMFileSystem.java:173)
at org.jenkinsci.plugins.workflow.cps.CpsScmFlowDefinition.create(CpsScmFlowDefinition.java:115)
at org.jenkinsci.plugins.workflow.cps.CpsScmFlowDefinition.create(CpsScmFlowDefinition.java:69)
at org.jenkinsci.plugins.workflow.job.WorkflowRun.run(WorkflowRun.java:309)
at hudson.model.ResourceController.execute(ResourceController.java:97)
at hudson.model.Executor.run(Executor.java:427)
Finished: FAILURE
原因是在checkout代码的时候根本没有解析变量，解决办法：
解决办法.png
轻量级检出 取消勾选后成功！！
参考链接：https://www.codeleading.com/article/6691734836/
这篇文章太给力了！
