diff --git a/.github/workflows/alpine-test.yml b/.github/workflows/alpine-test.yml
index 2c1eed391..6dc62f596 100644
--- a/.github/workflows/alpine-test.yml
+++ b/.github/workflows/alpine-test.yml
@@ -16,10 +16,10 @@ jobs:
     steps:
     - name: Prepare Alpine Linux
       run: |
-        apk add sudo git git-daemon python3 py3-pip
+        apk add sudo git git-daemon python3 py3-pip py3-virtualenv
         echo 'Defaults env_keep += "CI GITHUB_* RUNNER_*"' >/etc/sudoers.d/ci_env
         addgroup -g 127 docker
-        adduser -D -u 1001 runner
+        adduser -D -u 1001 runner  # TODO: Check if this still works on GHA as intended.
         adduser runner docker
       shell: sh -exo pipefail {0}  # Run this as root, not the "runner" user.
 
@@ -47,20 +47,21 @@ jobs:
     - name: Set up virtualenv
       run: |
         python -m venv .venv
-        . .venv/bin/activate
-        printf '%s=%s\n' 'PATH' "$PATH" 'VIRTUAL_ENV' "$VIRTUAL_ENV" >>"$GITHUB_ENV"
 
     - name: Update PyPA packages
       run: |
         # Get the latest pip, wheel, and prior to Python 3.12, setuptools.
+        . .venv/bin/activate
         python -m pip install -U pip $(pip freeze --all | grep -ow ^setuptools) wheel
 
     - name: Install project and test dependencies
       run: |
+        . .venv/bin/activate
         pip install ".[test]"
 
     - name: Show version and platform information
       run: |
+        . .venv/bin/activate
         uname -a
         command -v git python
         git version
@@ -69,4 +70,5 @@ jobs:
 
     - name: Test with pytest
       run: |
+        . .venv/bin/activate
         pytest --color=yes -p no:sugar --instafail -vv
diff --git a/.github/workflows/cygwin-test.yml b/.github/workflows/cygwin-test.yml
index bde4ea659..ebe50240d 100644
--- a/.github/workflows/cygwin-test.yml
+++ b/.github/workflows/cygwin-test.yml
@@ -55,10 +55,10 @@ jobs:
         # and cause subsequent tests to fail
         cat test/fixtures/.gitconfig >> ~/.gitconfig
 
-    - name: Ensure the "pip" command is available
+    - name: Set up virtualenv
       run: |
-        # This is used unless, and before, an updated pip is installed.
-        ln -s pip3 /usr/bin/pip
+        python -m venv .venv
+        echo 'BASH_ENV=.venv/bin/activate' >>"$GITHUB_ENV"
 
     - name: Update PyPA packages
       run: |
diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
index 747db62f0..b8e6391a1 100644
--- a/.github/workflows/pythonpackage.yml
+++ b/.github/workflows/pythonpackage.yml
@@ -11,15 +11,19 @@ permissions:
 jobs:
   build:
     strategy:
-      fail-fast: false
       matrix:
-        os: ["ubuntu-22.04", "macos-latest", "windows-latest"]
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
-        exclude:
-        - os: "macos-latest"
-          python-version: "3.7"
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
         include:
         - experimental: false
+        - os: ubuntu-22.04
+          python-version: "3.7"
+          experimental: false
+        - os: windows-latest
+          python-version: "3.7"
+          experimental: false
+
+      fail-fast: false
 
     runs-on: ${{ matrix.os }}
 
@@ -40,7 +44,7 @@ jobs:
 
     - name: Set up WSL (Windows)
       if: startsWith(matrix.os, 'windows')
-      uses: Vampire/setup-wsl@v3.1.1
+      uses: Vampire/setup-wsl@v4.0.0
       with:
         distribution: Alpine
         additional-packages: bash
diff --git a/test/test_git.py b/test/test_git.py
index 94e68ecf0..274511f8d 100644
--- a/test/test_git.py
+++ b/test/test_git.py
@@ -762,14 +762,14 @@ def test_environment(self, rw_dir):
     def test_handle_process_output(self):
         from git.cmd import handle_process_output, safer_popen
 
-        line_count = 5002
-        count = [None, 0, 0]
+        expected_line_count = 5002
+        actual_lines = [None, [], []]
 
-        def counter_stdout(line):
-            count[1] += 1
+        def stdout_handler(line):
+            actual_lines[1].append(line)
 
-        def counter_stderr(line):
-            count[2] += 1
+        def stderr_handler(line):
+            actual_lines[2].append(line)
 
         cmdline = [
             sys.executable,
@@ -784,10 +784,10 @@ def counter_stderr(line):
             shell=False,
         )
 
-        handle_process_output(proc, counter_stdout, counter_stderr, finalize_process)
+        handle_process_output(proc, stdout_handler, stderr_handler, finalize_process)
 
-        self.assertEqual(count[1], line_count)
-        self.assertEqual(count[2], line_count)
+        self.assertEqual(len(actual_lines[1]), expected_line_count, repr(actual_lines[1]))
+        self.assertEqual(len(actual_lines[2]), expected_line_count, repr(actual_lines[2]))
 
     def test_execute_kwargs_set_agrees_with_method(self):
         parameter_names = inspect.signature(cmd.Git.execute).parameters.keys()

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