The issuses is st_demo.ipynb

[panhu]

can you tell me about"git checkout c0466d9a356c1a33f671a546426d7bc33b5b17e8".what is "c0466d9a356c1a33f671a546426d7bc33b5b17e8"

[sw005320]

This is a git hash to identify a specific commit. Thus, we can use the specific commit (version) of the repository.