diff --git a/extensions/git/src/test/git.test.ts b/extensions/git/src/test/git.test.ts
index 09661eebc9c..39c9f0a7e9f 100644
--- a/extensions/git/src/test/git.test.ts
+++ b/extensions/git/src/test/git.test.ts
@@ -6,8 +6,9 @@
 'use strict';
 
 import 'mocha';
-import { GitStatusParser, parseGitmodules } from '../git';
+import { Git, GitStatusParser, Repository, parseGitmodules } from '../git';
 import * as assert from 'assert';
+import * as sinon from 'sinon';
 
 suite('git', () => {
 	suite('GitStatusParser', () => {
@@ -175,4 +176,22 @@ suite('git', () => {
 			]);
 		});
 	});
+
+	suite('Repository', () => {
+		test('get commit', async () => {
+			const spawnOption = {};
+			const gitOutput = `52c293a05038d865604c2284aa8698bd087915a1
+This is a commit message.`;
+			const git = sinon.createStubInstance(Git);
+			git.exec = sinon.stub()
+				.withArgs('REPOSITORY_ROOT', ['show', '-s', '--format=%H\n%B', 'REF'], spawnOption)
+				.returns(Promise.resolve({stdout: gitOutput}));
+			const repository = new Repository(git, 'REPOSITORY_ROOT');
+
+			assert.deepEqual(await repository.getCommit('REF'), {
+				hash: '52c293a05038d865604c2284aa8698bd087915a1',
+				message: 'This is a commit message.'
+			});
+		});
+	});
 });
\ No newline at end of file