fix(jd): reconcile code-channel push permissions

server-tools/lake-lamp-authz/hooks/guanghu-ice-heart-post-receive

@@ -0,0 +1,18 @@
+#!/bin/sh
+set -eu
+
+# The code-channel service runs with UMask=0077. Keep that isolation for its
+# database and other state, but make Git objects and refs readable/writable by
+# the repository's dedicated shared group after an accepted public push.
+repo_dir=$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd -P)
+cd "$repo_dir"
+owner_uid=$(id -u)
+
+find "$repo_dir/objects" "$repo_dir/refs" -user "$owner_uid" -type d -exec chmod g+rwx {} +
+find "$repo_dir/objects" "$repo_dir/refs" -user "$owner_uid" -type f -exec chmod g+rw {} +
+
+for shared_file in HEAD packed-refs; do
+  if [ -f "$repo_dir/$shared_file" ]; then
+    find "$repo_dir/$shared_file" -user "$owner_uid" -exec chmod g+rw {} +
+  fi
+done