ci: [refactor] Add .github/ci-windows.py prepare_tests step

diff --git a/.github/ci-windows.py b/.github/ci-windows.py
index d99ba2d9..d797814d 100755
--- a/.github/ci-windows.py
+++ b/.github/ci-windows.py
@@ -69,10 +69,31 @@ def build():
         run(command + ["-j1", "--verbose"])
 
 
+def prepare_tests(ci_type):
+    if ci_type == "standard":
+        run([sys.executable, "-m", "pip", "install", "pyzmq"])
+    elif ci_type == "fuzz":
+        repo_dir = os.path.join(os.environ["RUNNER_TEMP"], "qa-assets")
+        clone_cmd = [
+            "git",
+            "clone",
+            "--depth=1",
+            "https://github.com/bitcoin-core/qa-assets",
+            repo_dir,
+        ]
+        run(clone_cmd)
+        print("Using qa-assets repo from commit ...")
+        run(["git", "-C", repo_dir, "log", "-1"])
+
+
 def main():
     parser = argparse.ArgumentParser(description="Utility to run Windows CI steps.")
     parser.add_argument("ci_type", choices=GENERATE_OPTIONS, help="CI type to run.")
-    steps = ["generate", "build"]
+    steps = [
+        "generate",
+        "build",
+        "prepare_tests",
+    ]
     parser.add_argument("step", choices=steps, help="CI step to perform.")
     args = parser.parse_args()
 
@@ -80,6 +101,8 @@ def main():
         generate(args.ci_type)
     elif args.step == "build":
         build()
+    elif args.step == "prepare_tests":
+        prepare_tests(args.ci_type)
 
 
 if __name__ == "__main__":
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 75590d1d..a088021e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -310,6 +310,10 @@ jobs:
         run: |
           ctest --output-on-failure --stop-on-failure -j $NUMBER_OF_PROCESSORS -C Release
 
+      - name: Prepare tests
+        run: |
+          py -3 .github/ci-windows.py ${{ matrix.job-type }} prepare_tests
+
       - name: Run functional tests
         if: matrix.job-type == 'standard'
         working-directory: build
@@ -324,17 +328,8 @@ jobs:
           BITCOINCHAINSTATE: '${{ github.workspace }}\build\bin\Release\bitcoin-chainstate.exe'
           TEST_RUNNER_EXTRA: ${{ github.event_name != 'pull_request' && '--extended' || '' }}
         run: |
-          py -3 -m pip install pyzmq
           py -3 test/functional/test_runner.py --jobs $NUMBER_OF_PROCESSORS --quiet --tmpdirprefix="${RUNNER_TEMP}" --combinedlogslen=99999999 --timeout-factor=${TEST_RUNNER_TIMEOUT_FACTOR} ${TEST_RUNNER_EXTRA}
 
-      - name: Clone corpora
-        if: matrix.job-type == 'fuzz'
-        run: |
-          git clone --depth=1 https://github.com/bitcoin-core/qa-assets "${RUNNER_TEMP}/qa-assets"
-          cd "${RUNNER_TEMP}/qa-assets"
-          echo "Using qa-assets repo from commit ..."
-          git log -1
-
       - name: Run fuzz tests
         if: matrix.job-type == 'fuzz'
         working-directory: build