Plan is changing into disabled state when Git repository has no 'master' branch

When plan is configured with Git repository that has no 'master' branch, the entire plan is being disabled with the error message "Cannot determine head revision of 'ssh://c921d9a3-8a1f-4a63-a5ae-2b333c98dd27@127.0.0.1:36356/test' on branch ''".

Why this is wrong: 'master' is only naming convention, Git repository without master branch is completely valid, Bamboo should not depend on its existence

Workaround: create dummy 'master' branch in Git repository.

Version: Atlassian Bamboo version 4.2.0 build 3211 - 09 Aug 12
Full error message follows:

System Error Details
Build PayU Stat Manager - Snapshot : Plan 'BAPAYUSTATMANAGER-SNAP' detected that the repository is invalid. The plan will be disabled.
(java.lang.RuntimeException : com.atlassian.bamboo.repository.InvalidRepositoryException: Cannot determine head revision of 'ssh://c921d9a3-8a1f-4a63-a5ae-2b333c98dd27@127.0.0.1:36356/test' on branch ''. Branch has probably been removed.)

Occurred: 28 Aug 2012, 3:18:39 PM
java.lang.RuntimeException: com.atlassian.bamboo.repository.InvalidRepositoryException: Cannot determine head revision of 'ssh://c921d9a3-8a1f-4a63-a5ae-2b333c98dd27@127.0.0.1:36356/stat-manager' on branch ''. Branch has probably been removed.
at com.atlassian.bamboo.executor.RetryingTaskExecutor.rerun(RetryingTaskExecutor.java:119)
at com.atlassian.bamboo.executor.RetryingTaskExecutor.runTask(RetryingTaskExecutor.java:79)
at com.atlassian.bamboo.executor.RetryingTaskExecutor.retry(RetryingTaskExecutor.java:174)
at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectionChangesWithRetry(DefaultChangeDetectionManager.java:388)
at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectChangesAfterQuietPeriod(DefaultChangeDetectionManager.java:343)
at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectChangesSinceLastBuild(DefaultChangeDetectionManager.java:250)
at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectChangesSinceRevisions(DefaultChangeDetectionManager.java:218)
at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectChangesSinceRevisions(DefaultChangeDetectionManager.java:136)
at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectChangesSinceLastBuildIfTriggered(DefaultChangeDetectionManager.java:113)
at com.atlassian.bamboo.v2.trigger.ChangeDetectionListenerAction.process(ChangeDetectionListenerAction.java:100)
at com.atlassian.bamboo.chains.ChainExecutionManagerImpl$1$1.createBuildDetectionResult(ChainExecutionManagerImpl.java:176)
at com.atlassian.bamboo.chains.ChainExecutionManagerImpl.createNewChainState(ChainExecutionManagerImpl.java:379)
at com.atlassian.bamboo.chains.ChainExecutionManagerImpl.access$000(ChainExecutionManagerImpl.java:93)
at com.atlassian.bamboo.chains.ChainExecutionManagerImpl$1.getChainState(ChainExecutionManagerImpl.java:172)
at com.atlassian.bamboo.chains.ChainExecutionManagerImpl.tryStartChainState(ChainExecutionManagerImpl.java:252)
at com.atlassian.bamboo.chains.ChainExecutionManagerImpl.start(ChainExecutionManagerImpl.java:167)
at sun.reflect.GeneratedMethodAccessor273.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:304)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy78.start(Unknown Source)
at sun.reflect.GeneratedMethodAccessor273.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:304)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:198)
at $Proxy79.start(Unknown Source)
at com.atlassian.bamboo.plan.PlanExecutionManagerImpl$2.call(PlanExecutionManagerImpl.java:288)
at com.atlassian.bamboo.plan.PlanExecutionManagerImpl$2.call(PlanExecutionManagerImpl.java:282)
at com.atlassian.util.concurrent.ManagedLocks$ManagedLockImpl.withLock(ManagedLocks.java:324)
at com.atlassian.bamboo.plan.PlanExecutionLockServiceImpl.lock(PlanExecutionLockServiceImpl.java:77)
at com.atlassian.bamboo.plan.PlanExecutionManagerImpl.doWithProcessLock(PlanExecutionManagerImpl.java:429)
at com.atlassian.bamboo.plan.PlanExecutionManagerImpl.start(PlanExecutionManagerImpl.java:281)
at com.atlassian.bamboo.plan.NonBlockingPlanExecutionServiceImpl$1.call(NonBlockingPlanExecutionServiceImpl.java:70)
at com.atlassian.bamboo.plan.NonBlockingPlanExecutionServiceImpl$1.call(NonBlockingPlanExecutionServiceImpl.java:61)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at com.atlassian.bamboo.build.pipeline.concurrent.NamedThreadFactory$2.run(NamedThreadFactory.java:52)
at java.lang.Thread.run(Thread.java:679)
Caused by: com.atlassian.bamboo.repository.InvalidRepositoryException: Cannot determine head revision of 'ssh://c921d9a3-8a1f-4a63-a5ae-2b333c98dd27@127.0.0.1:36356/stat-manager' on branch ''. Branch has probably been removed.
at com.atlassian.bamboo.plugins.git.NativeGitOperationHelper.resolveBranch(NativeGitOperationHelper.java:459)
at com.atlassian.bamboo.plugins.git.NativeGitOperationHelper.obtainLatestRevision(NativeGitOperationHelper.java:514)
at com.atlassian.bamboo.plugins.git.GitRepository.collectChangesSinceLastBuild(GitRepository.java:209)
at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager$1.call(DefaultChangeDetectionManager.java:392)
at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager$1.call(DefaultChangeDetectionManager.java:389)
at com.atlassian.bamboo.executor.RetryingTaskExecutor.rerun(RetryingTaskExecutor.java:100)
... 45 more