diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cd50c41..e98e988 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -98,6 +98,7 @@ jobs:
           zip -r simplecov.zip coverage;
           RESPONSE=$(curl -X POST https://flaky.xyz/api/reports/simplecov \
             -F "part=@simplecov.zip" \
+            -F "branch=${{ github.head_ref || github.ref_name }}" \
             -H "Authorization: Bearer ${{ secrets.FLAKY_XYZ_TOKEN }}");
           echo $RESPONSE;
           echo "MARKDOWN=$(echo $RESPONSE | jq -r '.markdown')" >> $GITHUB_OUTPUT;
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..02507e9
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,3 @@
+precommit:
+	rubocop
+	rails test test/**
diff --git a/README.md b/README.md
index 8ae9fd2..c293a04 100644
--- a/README.md
+++ b/README.md
@@ -4,10 +4,10 @@ This is a project to simplify collection and analysis of CI results.
 
 - [x] Be able to upload and see SimpleCov HTML reports.
 - [ ] Update instructions with the working version from the monorepo.
-- [ ] Report Rspec test coverage along the time.
+- [ ] Report Rspec test coverage along the time, per-branch.
 - [ ] Be able to upload and see Sorbet's Spoom HTML reports.
 - [ ] Report Sorbet typing along the time.
-- [ ] Be able to track failing specs, and analyze which could be flaky in need of some help.
+- [ ] Be able to track failing specs, and analyze which could be flaky in need of some extra attention.
 
 ## Development environment
 
@@ -68,6 +68,7 @@ your-existing-test-action-on-github:
           -F "part=@simplecov.zip" \
           -F "expected_parts=1" \
           -F "run_identifier=${{ github.run_id }}" \
+          -F "branch=${{ github.head_ref || github.ref_name }}" \
           -H "Authorization: Bearer ${{ secrets.FLAKY_XYZ_TOKEN }}");
         echo "MARKDOWN=$(echo $RESPONSE | jq -r '.markdown')" >> $GITHUB_OUTPUT;
 
diff --git a/app/controllers/api/reports_controller.rb b/app/controllers/api/reports_controller.rb
index e4b4c83..e50b934 100644
--- a/app/controllers/api/reports_controller.rb
+++ b/app/controllers/api/reports_controller.rb
@@ -41,11 +41,13 @@ def report
         current_project.with_lock do
           # Prevent race-condition on many parts of the same run being uploaded close together.
           run_identifier = params[:run_identifier].presence || Time.zone.now.iso8601
+          branch = params[:branch].presence || "main"
           record = Report.find_or_create_by!(
             organization: current_project.organization,
             project: current_project,
             kind: action_name,
-            run_identifier:
+            run_identifier:,
+            branch:,
           )
         end
       end
diff --git a/test/controllers/api/reports_controller_test.rb b/test/controllers/api/reports_controller_test.rb
index 0f56feb..28abaf4 100644
--- a/test/controllers/api/reports_controller_test.rb
+++ b/test/controllers/api/reports_controller_test.rb
@@ -2,33 +2,44 @@
 
 class Api::FilesControllerTest < ActionDispatch::IntegrationTest
   def setup
-    @organization = Organization.create!(handle: "test-organization")
-    @project = Project.create!(handle: "test-project", organization: @organization)
-    @token = @project.reset_api_auth!
-  end
-
-  def teardown
-    Report.all.each(&:destroy)
-    Project.all.each(&:destroy)
-    Organization.all.each(&:destroy)
-    ActiveStorage::Blob.all.each(&:purge)
-  end
+    organization = Organization.create!(handle: "test-organization")
+    @project = Project.create!(handle: "test-project", organization:)
+    token = @project.reset_api_auth!
 
-  test "simplecov zip upload creates and processes Report" do
-    headers = { Authorization: "Bearer #{@token}" }
-    uploaded_file = fixture_file_upload(
+    @headers = { Authorization: "Bearer #{token}" }
+    @part = fixture_file_upload(
       Rails.root.join("test/fixtures/files/user_model_coverage.zip"),
       "application/zip"
     )
+  end
 
+  test "simplecov zip upload creates and processes Report" do
     assert_equal(Report.count, 0)
 
-    post simplecov_api_reports_url, params: { part: uploaded_file }, headers: headers
+    params = { part: @part }
+    post simplecov_api_reports_url, params:, headers: @headers
 
     assert_response :created
     assert_equal(Report.count, 1)
-    assert_equal(Report.first.parts.count, 1)
-    assert_equal(Report.first.bundled_html.present?, true)
-    assert_equal(Report.first.formatted_coverage, "3.47%")
+
+    report = Report.first
+    assert_equal(report.organization, @project.organization)
+    assert_equal(report.project, @project)
+    assert_equal(report.parts.count, 1)
+    assert_equal(report.bundled_html.present?, true)
+    assert_equal(report.formatted_coverage, "3.47%")
+    assert_equal(report.branch, "main")
+  end
+
+  test "with custom run_identfier and branch" do
+    params = { part: @part, run_identifier: "custom-run", branch: "custom-branch" }
+    post simplecov_api_reports_url, params:, headers: @headers
+
+    assert_response :created
+    assert_equal(Report.count, 1)
+
+    report = Report.first
+    assert_equal(report.run_identifier, "custom-run")
+    assert_equal(report.branch, "custom-branch")
   end
 end