The way tags for builds are created seems to have recently changed producing a break.

My job name includes spaces, and up to recently, tags replaced spaces with underscores. Now the behavior has changed, and the spaces are left, therefore making it an invalid tag.

For instance. My job name is "Vox Populy Web". Formerly tags wwhere "jenkins-Vox_Populy_Web-revision". Nowadays, it's "jenkins-Vox Populy Web-revision"

Stacktrace as follows:

FATAL: org.eclipse.jgit.api.errors.InvalidTagNameException: tag name jenkins-Vox Populy Web-174 is invalid
hudson.plugins.git.GitException: org.eclipse.jgit.api.errors.InvalidTagNameException: tag name jenkins-Vox Populy Web-174 is invalid
at org.jenkinsci.plugins.gitclient.JGitAPIImpl.tag(JGitAPIImpl.java:179)
at hudson.plugins.git.GitAPI.tag(GitAPI.java:220)
at hudson.plugins.git.GitSCM$4.invoke(GitSCM.java:1239)
at hudson.plugins.git.GitSCM$4.invoke(GitSCM.java:1196)
at hudson.FilePath.act(FilePath.java:852)
at hudson.FilePath.act(FilePath.java:834)
at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1196)
at hudson.model.AbstractProject.checkout(AbstractProject.java:1256)
at hudson.model.AbstractBuild$AbstractBuildExecution.defaultCheckout(AbstractBuild.java:590)
at jenkins.scm.SCMCheckoutStrategy.checkout(SCMCheckoutStrategy.java:88)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:495)
at hudson.model.Run.execute(Run.java:1502)
at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:477)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:237)
Caused by: org.eclipse.jgit.api.errors.InvalidTagNameException: tag name jenkins-Vox Populy Web-174 is invalid
at org.eclipse.jgit.api.TagCommand.processOptions(TagCommand.java:198)
at org.eclipse.jgit.api.TagCommand.call(TagCommand.java:112)
at org.jenkinsci.plugins.gitclient.JGitAPIImpl.tag(JGitAPIImpl.java:175)
... 14 more