git rev-list fails on startup

2013-08-20 23:25:31,574 INFO  [localhost-startStop-1]  c.a.s.i.p.r.DefaultRescopeProcessor Scheduling detail calculation for 152 pull request rescopes
2013-08-20 23:25:32,167 ERROR [rescope-details:thread-1]  c.a.s.i.s.git.GitCommandExitHandler [/usr/bin/git rev-list --format=%H%x02%h%x02%P%x02%p%x02%aN%x02%aE%x02%at%n%B%n%x03 --ignore-missing --stdin --] The syntax used is incorrect. git exited and printed a usage block
2013-08-20 23:25:32,175 ERROR [rescope-details:thread-1]  c.a.s.i.c.StateTransferringExecutor Error while processing asynchronous task
com.atlassian.stash.exception.CommandUsageException: The syntax used for the command is incorrect.
        at com.atlassian.stash.internal.scm.git.GitCommandExitHandler.checkUsage(GitCommandExitHandler.java:89) ~[na:na]
        at com.atlassian.stash.internal.scm.git.GitCommandExitHandler.evaluateStdErr(GitCommandExitHandler.java:53) ~[na:na]
        at com.atlassian.stash.internal.scm.git.GitCommandExitHandler.onError(GitCommandExitHandler.java:159) ~[na:na]
        at com.atlassian.stash.scm.DefaultCommandExitHandler.onExit(DefaultCommandExitHandler.java:35) ~[stash-spi-2.6.3.jar:na]
        at com.atlassian.stash.scm.BaseCommand.callExitHandler(BaseCommand.java:141) ~[stash-spi-2.6.3.jar:na]
        at com.atlassian.stash.scm.BaseCommand$CommandFuture.internalGet(BaseCommand.java:257) ~[stash-spi-2.6.3.jar:na]
        at com.atlassian.stash.scm.BaseCommand$CommandFuture.get(BaseCommand.java:224) ~[stash-spi-2.6.3.jar:na]
        at com.atlassian.stash.scm.BaseCommand.call(BaseCommand.java:78) ~[stash-spi-2.6.3.jar:na]
        at com.atlassian.stash.internal.pull.rescope.DefaultRescopeActivityDetailsProvider.getChangesetsBetween(DefaultRescopeActivityDetailsProvider.java:104) ~[stash-service-impl-2.6.3.jar:na]
        at com.atlassian.stash.internal.pull.rescope.DefaultRescopeActivityDetailsProvider.getDetails(DefaultRescopeActivityDetailsProvider.java:69) ~[stash-service-impl-2.6.3.jar:na]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.6.0_25]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) ~[na:1.6.0_25]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) ~[na:1.6.0_25]
        at java.lang.reflect.Method.invoke(Method.java:597) ~[na:1.6.0_25]
        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) ~[spring-aop-3.2.3.RELEASE.jar:3.2.3.RELEASE]
        at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183) ~[spring-aop-3.2.3.RELEASE.jar:3.2.3.RELEASE]
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150) ~[spring-aop-3.2.3.RELEASE.jar:3.2.3.RELEASE]
        at org.springframework.cache.interceptor.CacheInterceptor$1.invoke(CacheInterceptor.java:58) ~[spring-context-3.2.3.RELEASE.jar:3.2.3.RELEASE]
        at org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:214) ~[spring-context-3.2.3.RELEASE.jar:3.2.3.RELEASE]
        at org.springframework.cache.interceptor.CacheInterceptor.invoke(CacheInterceptor.java:66) ~[spring-context-3.2.3.RELEASE.jar:3.2.3.RELEASE]
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) ~[spring-aop-3.2.3.RELEASE.jar:3.2.3.RELEASE]
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) ~[spring-aop-3.2.3.RELEASE.jar:3.2.3.RELEASE]
        at $Proxy153.getDetails(Unknown Source) ~[na:na]
        at com.atlassian.stash.internal.pull.rescope.DefaultRescopeProcessor.processAll(DefaultRescopeProcessor.java:94) ~[stash-service-impl-2.6.3.jar:na]
        at com.atlassian.stash.internal.pull.rescope.DefaultRescopeProcessor.process(DefaultRescopeProcessor.java:78) ~[stash-service-impl-2.6.3.jar:na]
        at com.atlassian.stash.internal.pull.rescope.DefaultRescopeProcessor$RescopeCalculator.run(DefaultRescopeProcessor.java:220) ~[stash-service-impl-2.6.3.jar:na]
        at com.atlassian.stash.internal.concurrent.StateTransferringExecutor$StateTransferringRunnable.run(StateTransferringExecutor.java:68) ~[stash-platform-2.6.3.jar:na]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) [na:1.6.0_25]
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) [na:1.6.0_25]
        at java.util.concurrent.FutureTask.run(FutureTask.java:138) [na:1.6.0_25]
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [na:1.6.0_25]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [na:1.6.0_25]
        at java.lang.Thread.run(Thread.java:662) [na:1.6.0_25]