diff --git a/extensions/git/src/git.ts b/extensions/git/src/git.ts
index b2c111a46fe89..3b22f95653890 100644
--- a/extensions/git/src/git.ts
+++ b/extensions/git/src/git.ts
@@ -1295,7 +1295,8 @@ export class Repository {
 			return Promise.reject<Commit>('bad commit format');
 		}
 
-		return { hash: match[1], message: match[3], previousHashes: [match[2]] };
+		const previousHashes = match[2] ? match[2].split(' ') : [];
+		return { hash: match[1], message: match[3], previousHashes };
 	}
 
 	async updateSubmodules(paths: string[]): Promise<void> {
diff --git a/extensions/git/src/test/git.test.ts b/extensions/git/src/test/git.test.ts
index af4a24c349bf0..aff9b1f353ffe 100644
--- a/extensions/git/src/test/git.test.ts
+++ b/extensions/git/src/test/git.test.ts
@@ -178,22 +178,46 @@ suite('git', () => {
 	});
 
 	suite('Repository', () => {
-		test('get commit', async () => {
-			const spawnOption = {};
-			const gitOutput = `52c293a05038d865604c2284aa8698bd087915a1
+		const spawnOption = {};
+		const GIT_OUTPUT_SINGLE_PARENT = `52c293a05038d865604c2284aa8698bd087915a1
 8e5a374372b8393906c7e380dbb09349c5385554
 This is a commit message.`;
-			const git = sinon.createStubInstance(Git);
-			git.exec = sinon.stub()
-				.withArgs('REPOSITORY_ROOT', ['show', '-s', '--format=%H\n%P\n%B', 'REF_SINGLE_PARENT'], spawnOption)
-				.returns(Promise.resolve({stdout: gitOutput}));
-			const repository = new Repository(git, 'REPOSITORY_ROOT');
+		const GIT_OUTPUT_MULTIPLE_PARENTS = `52c293a05038d865604c2284aa8698bd087915a1
+8e5a374372b8393906c7e380dbb09349c5385554 df27d8c75b129ab9b178b386077da2822101b217
+This is a commit message.`;
+		const GIT_OUTPUT_NO_PARENTS = `52c293a05038d865604c2284aa8698bd087915a1
+
+This is a commit message.`;
+
+		const git = sinon.createStubInstance(Git);
+		git.exec = sinon.stub();
+		git.exec
+			.withArgs('REPOSITORY_ROOT', ['show', '-s', '--format=%H\n%P\n%B', 'REF_SINGLE_PARENT'], spawnOption)
+			.returns(Promise.resolve({stdout: GIT_OUTPUT_SINGLE_PARENT}));
+		git.exec
+			.withArgs('REPOSITORY_ROOT', ['show', '-s', '--format=%H\n%P\n%B', 'REF_MULTIPLE_PARENTS'], spawnOption)
+			.returns(Promise.resolve({stdout: GIT_OUTPUT_MULTIPLE_PARENTS}));
+		git.exec
+			.withArgs('REPOSITORY_ROOT', ['show', '-s', '--format=%H\n%P\n%B', 'REF_NO_PARENTS'], spawnOption)
+			.returns(Promise.resolve({stdout: GIT_OUTPUT_NO_PARENTS}));
+		const repository = new Repository(git, 'REPOSITORY_ROOT');
 
+		test('get commit', async () => {
 			assert.deepEqual(await repository.getCommit('REF_SINGLE_PARENT'), {
 				hash: '52c293a05038d865604c2284aa8698bd087915a1',
 				message: 'This is a commit message.',
 				previousHashes: ['8e5a374372b8393906c7e380dbb09349c5385554']
 			});
 		});
+
+		test('multiple previous commits', async () => {
+			const commit = await repository.getCommit('REF_MULTIPLE_PARENTS');
+			assert.deepEqual(commit.previousHashes, ['8e5a374372b8393906c7e380dbb09349c5385554', 'df27d8c75b129ab9b178b386077da2822101b217']);
+		});
+
+		test('no previous commits', async () => {
+			const commit = await repository.getCommit('REF_NO_PARENTS');
+			assert.deepEqual(commit.previousHashes, []);
+		});
 	});
 });
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