Check out LFS reference screenshots only in screenshot test

.gitlab-ci.yml

@@ -19,12 +19,13 @@ workflow:
     - saas-linux-medium-amd64
   variables:
     JAVA_HOME: /usr/lib/jvm/java-21-openjdk-amd64
+    GIT_LFS_SKIP_SMUDGE: "1"
     GIT_SUBMODULE_STRATEGY: none
   before_script:
     - test -e /etc/apt/sources.list.d/trixie-backports.list
       || echo "deb http://deb.debian.org/debian trixie-backports main" >> /etc/apt/sources.list
     - apt update
-    - apt-get -qy install -t trixie-backports --no-install-recommends git git-lfs sdkmanager openjdk-21-jdk-headless
+    - apt-get -qy install -t trixie-backports --no-install-recommends git sdkmanager openjdk-21-jdk-headless
     - test -n "$ANDROID_HOME" || source /etc/profile.d/bsenv.sh
     - export GRADLE_USER_HOME=$PWD/.gradle
     - export ANDROID_COMPILE_SDK=`sed -n 's,.*compileSdk = "\([0-9][0-9]*\)".*,\1,p' gradle/libs.versions.toml`
@@ -155,10 +156,20 @@ libs lint:
 app screenshots:
   <<: *test-template
   stage: lint
+  variables:
+    GIT_LFS_SKIP_SMUDGE: "0"
   rules:
     - <<: *always-on-these-changes
     - changes:
         - app/**/*
+  before_script:
+    - apt update
+    - apt-get -qy install --no-install-recommends git-lfs
+    - test -n "$ANDROID_HOME" || source /etc/profile.d/bsenv.sh
+    - export GRADLE_USER_HOME=$PWD/.gradle
+    - git lfs install
+    - git lfs fetch origin --all
+    - git lfs checkout
   script:
     - ./gradlew :app:validateBasicDefaultDebugScreenshotTest
   after_script:
@@ -199,6 +210,8 @@ app weblate merge conflict:
         - .gitlab-ci.yml
         - app/src/*/res/values*/strings.xml
         - metadata/*
+  variables:
+    GIT_LFS_SKIP_SMUDGE: "1"
   script:
     - apt-get update
     - apt-get -qy install --no-install-recommends ca-certificates git git-lfs