Returns the changeset where a specified test fixture turned red (implicitly assumes test is red on current head).
find.cmd [PathToRepo] [ProjectContainingTestFixture] [TestFixture] [FirstKnownGreenChangeSet]
Eg
.\find.cmd D:\stuff\code\teleoptikWfm domaintest\teleopti.ccc.domaintest.csproj Teleopti.Ccc.DomainTest.Forecasting.ActiveAgentCountTest 333f23cae7fc82722a57f1c89594dffb6abc738b