1 files changed, 4 insertions, 4 deletions
diff --git a/tools/dockerfile/stress_test/grpc_interop_stress_python/build_interop_stress.sh b/tools/dockerfile/stress_test/grpc_interop_stress_python/build_interop_stress.sh
index 3f85a86803..57b916ca4d 100755
--- a/tools/dockerfile/stress_test/grpc_interop_stress_python/build_interop_stress.sh
+++ b/tools/dockerfile/stress_test/grpc_interop_stress_python/build_interop_stress.sh
@@ -33,16 +33,16 @@ set -e
 
 mkdir -p /var/local/git
 git clone /var/local/jenkins/grpc /var/local/git/grpc
+# clone gRPC submodules, use data from locally cloned submodules where possible
+(cd /var/local/jenkins/grpc / && git submodule foreach 'cd /var/local/git/grpc \
+&& git submodule update --init --reference /var/local/jenkins/grpc/${name} \
+${name}')
 
 # copy service account keys if available
 cp -r /var/local/jenkins/service_account $HOME || true
 
 cd /var/local/git/grpc
 
-# clone gRPC submodules, use data from locally cloned submodules where possible
-git submodule | awk '{ system("git submodule update --init --reference \
-./../../jenkins/grpc/" $2 " " $2) }'
-
 tools/run_tests/run_tests.py -l python -c opt --build_only
 
 # Build c++ interop client