diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 68c7118c..e7c32fbb 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -232,7 +232,7 @@ jobs:
           path: basic
       - name: Verify basic
         run: __test__/verify-basic.sh --archive
-    
+
   test-git-container:
     runs-on: ubuntu-latest
     container: bitnami/git:latest
@@ -269,4 +269,33 @@ jobs:
       - name: Fix Checkout v3
         uses: actions/checkout@v3
         with:
-          path: v3
\ No newline at end of file
+          path: v3
+
+  test-output:
+    runs-on: ubuntu-latest
+    steps:
+      # Clone this repo
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      # Basic checkout using git
+      - name: Checkout basic
+        id: checkout
+        uses: ./
+        with:
+          ref: test-data/v2/basic
+
+      # Verify output
+      - name: Verify output
+        run: |
+          echo "Commit: ${{ steps.checkout.outputs.commit }}"
+          echo "Ref: ${{ steps.checkout.outputs.ref }}"
+
+          if [ "${{ steps.checkout.outputs.ref }}" != "test-data/v2/basic" ]; then
+            echo "Expected ref to be test-data/v2/basic"
+            exit 1
+          fi
+
+      # needed to make checkout post cleanup succeed
+      - name: Fix Checkout
+        uses: actions/checkout@v3
diff --git a/action.yml b/action.yml
index 43d408d1..390a2440 100644
--- a/action.yml
+++ b/action.yml
@@ -89,6 +89,11 @@ inputs:
   github-server-url:
     description: The base URL for the GitHub instance that you are trying to clone from, will use environment defaults to fetch from the same instance that the workflow is running from unless specified. Example URLs are https://github.com or https://my-ghes-server.example.com
     required: false
+outputs:
+  ref:
+    description: 'The branch, tag or SHA that was checked out'
+  commit:
+    description: 'The commit SHA that was checked out'
 runs:
   using: node20
   main: dist/index.js
diff --git a/dist/index.js b/dist/index.js
index 67752ae3..f8204b32 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -1314,7 +1314,8 @@ function getSource(settings) {
             // Get commit information
             const commitInfo = yield git.log1();
             // Log commit sha
-            yield git.log1("--format='%H'");
+            const commitSHA = yield git.log1('--format=%H');
+            core.setOutput('commit', commitSHA.trim());
             // Check for incorrect pull request merge commit
             yield refHelper.checkCommitInfo(settings.authToken, commitInfo, settings.repositoryOwner, settings.repositoryName, settings.ref, settings.commit, settings.githubServerUrl);
         }
@@ -1838,6 +1839,7 @@ function run() {
                 coreCommand.issueCommand('add-matcher', {}, path.join(__dirname, 'problem-matcher.json'));
                 // Get sources
                 yield gitSourceProvider.getSource(sourceSettings);
+                core.setOutput('ref', sourceSettings.ref);
             }
             finally {
                 // Unregister problem matcher
diff --git a/src/git-source-provider.ts b/src/git-source-provider.ts
index c1360b82..6fa3e28a 100644
--- a/src/git-source-provider.ts
+++ b/src/git-source-provider.ts
@@ -246,7 +246,8 @@ export async function getSource(settings: IGitSourceSettings): Promise<void> {
     const commitInfo = await git.log1()
 
     // Log commit sha
-    await git.log1("--format='%H'")
+    const commitSHA = await git.log1('--format=%H')
+    core.setOutput('commit', commitSHA.trim())
 
     // Check for incorrect pull request merge commit
     await refHelper.checkCommitInfo(
diff --git a/src/main.ts b/src/main.ts
index 97a27af0..0684c6f5 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -19,6 +19,7 @@ async function run(): Promise<void> {
 
       // Get sources
       await gitSourceProvider.getSource(sourceSettings)
+      core.setOutput('ref', sourceSettings.ref)
     } finally {
       // Unregister problem matcher
       coreCommand.issueCommand('remove-matcher', {owner: 'checkout-git'}, '')