[Tutorial] fix

Author: YWHyuk

tutorial/jupyterhub/Dockerfile.tutorial

@@ -49,9 +49,10 @@ ENV PATH=$PATH:/root/.local/bin
 ENV LD_LIBRARY_PATH=/usr/lib/x86_64-linux-gnu:/opt/conda/lib:/usr/local/nvidia/lib:/usr/local/nvidia/lib64:$LD_LIBRARY_PATH
 
 # Gem5 (TorchSim branch before build)
-RUN git clone https://github.com/PSAL-POSTECH/gem5.git --branch ispass2026 \
+RUN git clone https://github.com/PSAL-POSTECH/gem5.git --branch tutorial \
     && cd gem5 \
     && scons build/RISCV/gem5.opt -j"$(nproc)"
+RUN cd gem5 && git checkout ispass2026
 ENV GEM5_PATH=/workspace/gem5/build/RISCV/gem5.opt
 
 # LLVM MLIR (RISC-V)