ci: fix jenkins checkout (#34025)

fix

selfdrive/test/setup_device_ci.sh

@@ -86,7 +86,7 @@ safe_checkout() {
   rsync -a --delete $SOURCE_DIR $TEST_DIR
 }
 
-unsafe_checkout() {
+unsafe_checkout() {( set -e
   # checkout directly in test dir, leave old build products
 
   cd $TEST_DIR
@@ -105,7 +105,7 @@ unsafe_checkout() {
 
   git lfs pull
   (ulimit -n 65535 && git lfs prune)
-}
+)}
 
 export GIT_PACK_THREADS=8
 
@@ -116,7 +116,12 @@ fi
 
 if [ ! -z "$UNSAFE" ]; then
   echo "trying unsafe checkout"
-  unsafe_checkout || safe_checkout
+  set +e
+  unsafe_checkout
+  if [[ "$?" -ne 0 ]]; then
+    safe_checkout
+  fi
+  set -e
 else
   echo "doing safe checkout"
   safe_checkout