diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 6babffc..6af8c8a 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -18,6 +18,8 @@ on:
         type: string
         default: ubuntu-latest
       ref:
+        required: false
+        type: string
         default: ${{ github.sha }}
 
 jobs:
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 95f0b41..e0776ea 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -18,6 +18,8 @@ on:
         type: boolean
         default: false
       ref:
+        required: false
+        type: string
         default: ${{ github.sha }}
 
 jobs:
diff --git a/.github/workflows/mypy.yml b/.github/workflows/mypy.yml
index 54422f3..c3db810 100644
--- a/.github/workflows/mypy.yml
+++ b/.github/workflows/mypy.yml
@@ -18,6 +18,8 @@ on:
         type: boolean
         default: false
       ref:
+        required: false
+        type: string
         default: ${{ github.sha }}
 
 jobs:
diff --git a/.github/workflows/self-tests.yml b/.github/workflows/self-tests.yml
new file mode 100644
index 0000000..a597eee
--- /dev/null
+++ b/.github/workflows/self-tests.yml
@@ -0,0 +1,70 @@
+name: self-test
+
+on:
+  push:
+    branches: [main, test-me-*]
+    tags: '*'
+  pull_request:
+
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  env:
+    strategy:
+      matrix:
+        os: [windows-latest, macos-latest, ubuntu-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - uses: asottile/workflows/.github/actions/fast-checkout@v1.6.0
+      with:
+        path: subdir
+    - uses: ./subdir/.github/actions/env/
+      with:
+        ref: main
+
+  coverage:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: asottile/workflows/.github/actions/fast-checkout@v1.6.0
+      with:
+        path: subdir
+    - uses: ./subdir/.github/actions/coverage/actions.yml
+      with:
+        ref: main
+
+  tests:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: asottile/workflows/.github/actions/fast-checkout@v1.6.0
+      with:
+        path: subdir
+    - uses: ./subdir/.github/actions/tests/actions.yml
+      with:
+        ref: main
+
+  workflow-tests:
+    uses: ./.github/workflows/tests.yml
+    with:
+      os: ubuntu-latest
+      python-version: '["3.10", "3.11"]'
+      pytorch-version: '["2.0.0", "2.1.2"]'
+      pytorch-dtype: 'float32'
+      ref: main
+
+  workflow-coverage:
+    uses: ./.github/workflows/coverage.yml
+    with:
+      ref: main
+
+  workflow-mypy:
+    uses: ./.github/workflows/mypy.yml
+    with:
+      ref: main
+
+  workflow-docs:
+    uses: ./.github/workflows/docs.yml
+    with:
+      ref: main
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 0a1dc64..156c20f 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -30,6 +30,8 @@ on:
         type: boolean
         default: false
       ref:
+        required: false
+        type: string
         default: ${{ github.sha }}
 
 jobs:
diff --git a/.github/workflows/tutorials.yml b/.github/workflows/tutorials.yml
index 0b2996d..7db4fbc 100644
--- a/.github/workflows/tutorials.yml
+++ b/.github/workflows/tutorials.yml
@@ -18,6 +18,8 @@ on:
         type: boolean
         default: false
       ref:
+        required: false
+        type: string
         default: ${{ github.sha }}
 
 jobs: