prepare_data.sh: snowcli fixes#5

sfc-gh-vtimofeenko wants to merge 2 commits intoSnowflake-Labs:mainSnowflake-Labs/sfguide-getting-started-with-native-apps:mainfrom

sfc-gh-vtimofeenko:fix-snowclisfc-gh-vtimofeenko/sfguide-getting-started-with-native-apps:fix-snowcliCopy head branch name to clipboard