diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index cf122e706f24e7b0a8382a4a1edee5bf9509c483..85401b34a58a1962e938d9f32014c2dfd5f3b3e8 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -70,6 +70,8 @@ test:linux:
   artifacts:
     paths:
       - t/failed-test-artifacts
+    reports:
+      junit: build/meson-logs/testlog.junit.xml
     when: on_failure
 
 test:osx:
@@ -110,8 +112,16 @@ test:osx:
   artifacts:
     paths:
       - t/failed-test-artifacts
+    reports:
+      junit: build/meson-logs/testlog.junit.xml
     when: on_failure
 
+.windows_before_script: &windows_before_script
+  # Disabling realtime monitoring fails on some of the runners, but it
+  # significantly speeds up test execution in the case where it works. We thus
+  # try our luck, but ignore any failures.
+  - Set-MpPreference -DisableRealtimeMonitoring $true; $true
+
 build:mingw64:
   stage: build
   tags:
@@ -119,7 +129,7 @@ build:mingw64:
   variables:
     NO_PERL: 1
   before_script:
-    - Set-MpPreference -DisableRealtimeMonitoring $true
+    - *windows_before_script
     - ./ci/install-sdk.ps1 -directory "git-sdk"
   script:
     - git-sdk/usr/bin/bash.exe -l -c 'ci/make-test-artifacts.sh artifacts'
@@ -136,7 +146,7 @@ test:mingw64:
     - job: "build:mingw64"
       artifacts: true
   before_script:
-    - Set-MpPreference -DisableRealtimeMonitoring $true
+    - *windows_before_script
     - git-sdk/usr/bin/bash.exe -l -c 'tar xf artifacts/artifacts.tar.gz'
     - New-Item -Path .git/info -ItemType Directory
     - New-Item .git/info/exclude -ItemType File -Value "/git-sdk"
@@ -150,18 +160,10 @@ test:mingw64:
   tags:
     - saas-windows-medium-amd64
   before_script:
-    - Set-MpPreference -DisableRealtimeMonitoring $true
-    - choco install -y git meson ninja openssl
+    - *windows_before_script
+    - choco install -y git meson ninja
     - Import-Module $env:ChocolateyInstall\helpers\chocolateyProfile.psm1
     - refreshenv
-    # The certificate store for Python on Windows is broken and fails to fetch
-    # certificates, see https://bugs.python.org/issue36011. This seems to
-    # mostly be an issue with how the GitLab image is set up as it is a
-    # non-issue on GitHub Actions. Work around the issue by importing
-    # cetrificates manually.
-    - Invoke-WebRequest https://curl.haxx.se/ca/cacert.pem -OutFile cacert.pem
-    - openssl pkcs12 -export -nokeys -in cacert.pem -out certs.pfx -passout "pass:"
-    - Import-PfxCertificate -CertStoreLocation Cert:\LocalMachine\Root -FilePath certs.pfx
 
 build:msvc-meson:
   extends: .msvc-meson
@@ -183,6 +185,9 @@ test:msvc-meson:
   script:
     - meson test -C build --no-rebuild --print-errorlogs --slice $Env:CI_NODE_INDEX/$Env:CI_NODE_TOTAL
   parallel: 10
+  artifacts:
+    reports:
+      junit: build/meson-logs/testlog.junit.xml
 
 test:fuzz-smoke-tests:
   image: ubuntu:latest
diff --git a/t/t8020-last-modified.sh b/t/t8020-last-modified.sh
index e13aad14398dd9055ff45ab57700329e7aab37c4..61f00bc15c3b2d170d981038f0ebb48fd4bf31c2 100755
--- a/t/t8020-last-modified.sh
+++ b/t/t8020-last-modified.sh
@@ -33,7 +33,6 @@ check_last_modified() {
 	done &&
 
 	cat >expect &&
-	test_when_finished "rm -f tmp.*" &&
 	git ${indir:+-C "$indir"} last-modified "$@" >tmp.1 &&
 	git name-rev --annotate-stdin --name-only --tags \
 		<tmp.1 >tmp.2 &&
@@ -128,20 +127,25 @@ test_expect_success 'only last-modified files in the current tree' '
 	EOF
 '
 
-test_expect_success 'last-modified with subdir and criss-cross merge' '
-	git checkout -b branch-k1 1 &&
-	mkdir -p a k &&
-	test_commit k1 a/file2 &&
-	git checkout -b branch-k2 &&
-	test_commit k2 k/file2 &&
-	git checkout branch-k1 &&
-	test_merge km2 branch-k2 &&
-	test_merge km3 3 &&
-	check_last_modified <<-\EOF
-	km3 a
-	k2 k
-	1 file
-	EOF
+test_expect_success 'subdirectory modified via merge' '
+	test_when_finished rm -rf repo &&
+	git init repo &&
+	(
+		cd repo &&
+		test_commit base &&
+		git switch --create left &&
+		mkdir subdir &&
+		test_commit left subdir/left &&
+		git switch --create right base &&
+		mkdir subdir &&
+		test_commit right subdir/right &&
+		git switch - &&
+		test_merge merge right &&
+		check_last_modified <<-\EOF
+		merge subdir
+		base base.t
+		EOF
+	)
 '
 
 test_expect_success 'cross merge boundaries in blaming' '