fix: retry git submodule fetch

scripts/init_submodules

@@ -5,14 +5,15 @@ set -euo pipefail
 REPOSITORY=$1
 
 BUILD_DIR=$(query_manifest buildDir $REPOSITORY)
-if [ -d "$BUILD_DIR" ]; then
+if [ -d "$BUILD_DIR" ] && [ "$(git submodule status $BUILD_DIR)" ]; then
+  # We have submodules, initialize them
   echo "Initialising any submodules under $REPOSITORY buildDir: $BUILD_DIR"
-  git submodule update --init --recursive $BUILD_DIR && exit || echo "No submodules under buildDir"
+  retry_10 git submodule update --init --recursive $BUILD_DIR && exit
 fi
 
 SUBMODULE_PATH=$(query_manifest submodulePath $REPOSITORY)
 if [ -n "$SUBMODULE_PATH" ]; then
   # TODO: Needs to actually init all dependency submodules as well.
   echo "Initialising submodule: $SUBMODULE_PATH"
-  git submodule update --init --recursive $SUBMODULE_PATH
-fi
+  retry_10 git submodule update --init --recursive $SUBMODULE_PATH
+fi

scripts/retry_10

@@ -0,0 +1,7 @@
+set -eu
+# Retries up to 10 times with 10 second intervals
+for i in $(seq 1 10); do
+    "$@" && return || sleep 10
+done
+echo "$@ failed after 10 attempts"
+exit 1