diff --git a/.github/workflows/downstream_tests.yml b/.github/workflows/downstream_tests.yml
index ce3c3cc7c..abec3dbd4 100644
--- a/.github/workflows/downstream_tests.yml
+++ b/.github/workflows/downstream_tests.yml
@@ -27,7 +27,10 @@ jobs:
             ~\AppData\Local\pip\Cache
           key: ${{ runner.os }}-build--${{ matrix.python-version }}
       - name: clone-altair
-        run: git clone https://github.com/vega/altair.git
+        run: |
+            git clone https://github.com/vega/altair.git --depth=1
+            cd altair
+            git log
       - name: install-basics
         run: python -m pip install --upgrade tox virtualenv setuptools pip
       - name: install-altair-dev
@@ -70,7 +73,7 @@ jobs:
             ~\AppData\Local\pip\Cache
           key: ${{ runner.os }}-build-${{ matrix.python-version }}
       - name: clone-scikit-lego
-        run: git clone https://github.com/koaning/scikit-lego.git
+        run: git clone https://github.com/koaning/scikit-lego.git --depth 1
       - name: install-basics
         run: python -m pip install --upgrade tox virtualenv setuptools pip
       - name: install-scikit-lego-dev