Hawtio GitFacadeTest fails on Windows

The GitFacadeTest#existsTest fails with the error below. I will update the pom to exclude it on windows for now.

io.hawt.git.RuntimeIOException: org.eclipse.jgit.api.errors.RefNotFoundException: Ref origin/master can not be resolved
at org.eclipse.jgit.api.CheckoutCommand.getStartPoint(CheckoutCommand.java:461)
at org.eclipse.jgit.api.CheckoutCommand.call(CheckoutCommand.java:213)
at io.hawt.git.GitFacade.checkoutBranch(GitFacade.java:933)
at io.hawt.git.GitFacade$9.call(GitFacade.java:417)
at io.hawt.git.GitFacade$9.call(GitFacade.java:410)
at io.hawt.git.GitFacade.gitOperation(GitFacade.java:893)
at io.hawt.git.GitFacade.write(GitFacade.java:410)
at io.hawt.git.GitFacade.write(GitFacade.java:405)
at io.hawt.git.GitFacadeTest.testExists(GitFacadeTest.java:87)