diff --git a/integration_tests/test_benchmark.py b/integration_tests/test_benchmark.py
index e539564..41e432a 100644
--- a/integration_tests/test_benchmark.py
+++ b/integration_tests/test_benchmark.py
@@ -21,6 +21,10 @@ def test_bench():
     _run_cargo_bench("after")
 
     # Move to upstream tip.
+    subprocess.run(
+        "git fetch {} {}".format(REMOTE, BRANCH),
+        shell=True, check=True
+    )
     subprocess.run(
         "git checkout {}/{}".format(REMOTE, BRANCH),
         shell=True, check=True