diff --git a/tests/base.py b/tests/base.py
index 036515d..f274ed6 100755
--- a/tests/base.py
+++ b/tests/base.py
@@ -486,6 +486,29 @@
         self.changes[self.change_number] = c
         return c
 
+    def addFakeTag(self, project, branch, tag):
+        path = os.path.join(self.upstream_root, project)
+        repo = git.Repo(path)
+        commit = repo.heads[branch].commit
+        newrev = commit.hexsha
+        ref = 'refs/tags/' + tag
+
+        git.Tag.create(repo, tag, commit)
+
+        event = {
+            "type": "ref-updated",
+            "submitter": {
+                "name": "User Name",
+            },
+            "refUpdate": {
+                "oldRev": 40 * '0',
+                "newRev": newrev,
+                "refName": ref,
+                "project": project,
+            }
+        }
+        return event
+
     def getFakeBranchCreatedEvent(self, project, branch):
         path = os.path.join(self.upstream_root, project)
         repo = git.Repo(path)
diff --git a/tests/fixtures/config/branch-tag/git/org_project/.zuul.yaml b/tests/fixtures/config/branch-tag/git/org_project/.zuul.yaml
new file mode 100644
index 0000000..acbba6c
--- /dev/null
+++ b/tests/fixtures/config/branch-tag/git/org_project/.zuul.yaml
@@ -0,0 +1,9 @@
+- job:
+    name: test-job
+    run: playbooks/test-job.yaml
+
+- project:
+    name: org/project
+    tag:
+      jobs:
+        - test-job
diff --git a/tests/fixtures/config/branch-tag/git/org_project/README b/tests/fixtures/config/branch-tag/git/org_project/README
new file mode 100644
index 0000000..9daeafb
--- /dev/null
+++ b/tests/fixtures/config/branch-tag/git/org_project/README
@@ -0,0 +1 @@
+test
diff --git a/tests/fixtures/config/branch-tag/git/org_project/playbooks/test-job.yaml b/tests/fixtures/config/branch-tag/git/org_project/playbooks/test-job.yaml
new file mode 100644
index 0000000..f679dce
--- /dev/null
+++ b/tests/fixtures/config/branch-tag/git/org_project/playbooks/test-job.yaml
@@ -0,0 +1,2 @@
+- hosts: all
+  tasks: []
diff --git a/tests/fixtures/config/branch-tag/git/project-config/zuul.yaml b/tests/fixtures/config/branch-tag/git/project-config/zuul.yaml
new file mode 100644
index 0000000..0ae6396
--- /dev/null
+++ b/tests/fixtures/config/branch-tag/git/project-config/zuul.yaml
@@ -0,0 +1,21 @@
+- pipeline:
+    name: tag
+    manager: independent
+    trigger:
+      gerrit:
+        - event: ref-updated
+          ref: ^refs/tags/.*$
+
+- job:
+    name: base
+    parent: null
+
+- project:
+    name: project-config
+    tag:
+      jobs: []
+
+- project:
+    name: org/project
+    tag:
+      jobs: []
diff --git a/tests/fixtures/config/branch-tag/main.yaml b/tests/fixtures/config/branch-tag/main.yaml
new file mode 100644
index 0000000..0ac232f
--- /dev/null
+++ b/tests/fixtures/config/branch-tag/main.yaml
@@ -0,0 +1,8 @@
+- tenant:
+    name: tenant-one
+    source:
+      gerrit:
+        config-projects:
+          - project-config
+        untrusted-projects:
+          - org/project
diff --git a/tests/unit/test_v3.py b/tests/unit/test_v3.py
index 70d9211..54cf111 100755
--- a/tests/unit/test_v3.py
+++ b/tests/unit/test_v3.py
@@ -157,6 +157,18 @@
         self.assertIn('Unable to modify final job', A.messages[0])
 
 
+class TestBranchTag(ZuulTestCase):
+    tenant_config_file = 'config/branch-tag/main.yaml'
+
+    def test_negative_branch_match(self):
+        # Test that a negative branch matcher works with implied branches.
+        event = self.fake_gerrit.addFakeTag('org/project', 'master', 'foo')
+        self.fake_gerrit.addEvent(event)
+        self.waitUntilSettled()
+        self.assertHistory([
+            dict(name='test-job', result='SUCCESS', ref='refs/tags/foo')])
+
+
 class TestBranchNegative(ZuulTestCase):
     tenant_config_file = 'config/branch-negative/main.yaml'