diff --git a/docker/npu.Dockerfile b/docker/npu.Dockerfile
index 928ce4ee7..bf135b293 100644
--- a/docker/npu.Dockerfile
+++ b/docker/npu.Dockerfile
@@ -85,10 +85,10 @@ RUN . /etc/environment_new && \
 ## Install triton-ascend
 RUN (${PIP_INSTALL} pybind11 triton-ascend)
 
-# Install SGLang
-RUN git clone https://github.com/sgl-project/sglang --branch $SGLANG_TAG && \
-    (cd sglang/python && rm -rf pyproject.toml && mv pyproject_npu.toml pyproject.toml && ${PIP_INSTALL} -v .[all_npu]) && \
-    rm -rf sglang
+# Install SGLang (editable mode to preserve source and git history)
+RUN git clone https://github.com/sgl-project/sglang --branch $SGLANG_TAG /sgl-workspace/sglang && \
+    cd /sgl-workspace/sglang/python && rm -rf pyproject.toml && mv pyproject_npu.toml pyproject.toml && \
+    ${PIP_INSTALL} -v -e .[all_npu]
 
 # Install Deep-ep
 # pin wheel to 0.45.1 ref: https://github.com/pypa/wheel/issues/662