Properly update git binary snapshots during pub upgrade.

sdk/lib/_internal/pub/test/global/activate/git_package_test.dart

Index: sdk/lib/_internal/pub/test/global/activate/git_package_test.dart
diff --git a/sdk/lib/_internal/pub/test/global/activate/git_package_test.dart b/sdk/lib/_internal/pub/test/global/activate/git_package_test.dart
index d6a887bd78bc77084a3dfce8cc4e8ef4d9b62a05..ad5214537cee10d0cb3ecabc8cfe54ec83caca66 100644
--- a/sdk/lib/_internal/pub/test/global/activate/git_package_test.dart
+++ b/sdk/lib/_internal/pub/test/global/activate/git_package_test.dart
@@ -2,6 +2,8 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+import 'package:scheduled_test/scheduled_test.dart';
+
 import '../../descriptor.dart' as d;
 import '../../test_pub.dart';
 
@@ -18,12 +20,15 @@ main() {
     ]).create();
 
     schedulePub(args: ["global", "activate", "-sgit", "../foo.git"],
-        output: '''
-            Resolving dependencies...
-            + foo 1.0.0 from git ../foo.git
-            Precompiling executables...
-            Loading source assets...
-            Precompiled foo:foo.
-            Activated foo 1.0.0 from Git repository "../foo.git".''');
+        output: allOf(
+            startsWith(
+                'Resolving dependencies...\n'
+                '+ foo 1.0.0 from git ../foo.git at '),
+            // Specific revision number goes here.
+            endsWith(
+                'Precompiling executables...\n'
+                'Loading source assets...\n'
+                'Precompiled foo:foo.\n'
+                'Activated foo 1.0.0 from Git repository "../foo.git".')));
   });
 }