diff --git a/deploy/prod/deploy.sh b/deploy/prod/deploy.sh
index 2b3f300..86680ae 100755
--- a/deploy/prod/deploy.sh
+++ b/deploy/prod/deploy.sh
@@ -11,6 +11,16 @@
 # 首次部署前准备好 ~/.config/dadaotask/env.production（见 env.production.example）。
 set -euo pipefail
 
+# 这个脚本会 git reset 自己所在的仓库：bash 按字节偏移边读边执行，脚本被改写后
+# 可能读到新旧混合的内容（实测踩过）——先把自己复制到临时文件再执行。
+if [ -z "${DADAO_DEPLOY_SNAPSHOT:-}" ]; then
+  _snap=$(mktemp /tmp/dadao-deploy.XXXXXX.sh)
+  cp "$0" "$_snap"
+  trap 'rm -f "$_snap"' EXIT
+  DADAO_DEPLOY_SNAPSHOT=1 bash "$_snap" "$@"
+  exit $?
+fi
+
 APP_DIR=${APP_DIR:-/home/openclaw/app/dadaotask}
 CONF_DIR=${CONF_DIR:-$HOME/.config/dadaotask}
 ENV_FILE=$CONF_DIR/env.production