Issue #2165 WorkingTree uses incorrect commit.

The repository opened for use to do versioning should be the Project Directory, not the DotGit directory.
Also fixes it so the project directory used is based on the DynamicGitDirectory if it is a dynamic repo.

Author: tpaxatb

src/GitVersionCore/Extensions/ArgumentExtensions.cs

@@ -26,12 +26,7 @@ public static string GetDotGitDirectory(this Arguments arguments)
 
         public static string GetProjectRootDirectory(this Arguments arguments)
         {
-            if (arguments.IsDynamicGitRepository())
-            {
-                return arguments.GetWorkingDirectory();
-            }
-
-            var dotGitDirectory = Repository.Discover(arguments.GetWorkingDirectory());
+            var dotGitDirectory = Repository.Discover(arguments.IsDynamicGitRepository() ? arguments.DynamicGitRepositoryPath : arguments.GetWorkingDirectory());
 
             if (string.IsNullOrEmpty(dotGitDirectory))
                 throw new DirectoryNotFoundException($"Can't find the .git directory in {dotGitDirectory}");

src/GitVersionCore/GitVersionCalculator.cs

@@ -61,7 +61,7 @@ private VersionVariables ExecuteInternal(Arguments arguments)
         {
             var configuration = configProvider.Provide(overrideConfig: arguments.OverrideConfig);
 
-            using var repo = new Repository(arguments.GetDotGitDirectory());
+            using var repo = new Repository(arguments.GetProjectRootDirectory());
             var targetBranch = repo.GetTargetBranch(arguments.TargetBranch);
             var gitVersionContext = new GitVersionContext(repo, log, targetBranch, configuration, commitId: arguments.CommitId);
             var semanticVersion = nextVersionCalculator.FindVersion(gitVersionContext);