temporarily disable reference to main branch for internal build test

AWSSDKSwiftCLI/Sources/AWSSDKSwiftCLI/Commands/AWSSDKSwiftCLI/Subcommands/PrepareRelease.swift

@@ -81,16 +81,16 @@ struct PrepareRelease {
         try FileManager.default.changeWorkingDirectory(repoPath)
 
         let previousVersion = try getPreviousVersion()
-        guard try repoHasChanges(previousVersion) else {
-            /// If repo has no changes, create an empty release-manifest.json file.
-            /// Empty manifest file makes GitHubReleasePublisher be no-op.
-            /// The manifest file is required regardless of whether there should
-            /// be a release or not.
-            try createEmptyReleaseManifest()
-            /// Return without creating new commit or tag in local repos.
-            /// This makes GitPublisher be no-op.
-            return
-        }
+//        guard try repoHasChanges(previousVersion) else {
+//            /// If repo has no changes, create an empty release-manifest.json file.
+//            /// Empty manifest file makes GitHubReleasePublisher be no-op.
+//            /// The manifest file is required regardless of whether there should
+//            /// be a release or not.
+//            try createEmptyReleaseManifest()
+//            /// Return without creating new commit or tag in local repos.
+//            /// This makes GitPublisher be no-op.
+//            return
+//        }
         let newVersion = try createNewVersion(previousVersion)
 
         try stageFiles()