`checkout` does not support specifying a commit.

[YuYongzhi]

 ⇒  git-sim --animate checkout -b new-dev 733e09b1
Usage: git-sim checkout [OPTIONS] BRANCH
Try 'git-sim checkout -h' for help.
╭─ Error   ───────────────────────────────────────────────────────╮
│ Got unexpected extra argument (733e09b180798495ec0003925e932879cbf305ea)  
╰───────────────────────────────────────────────────────────╯

[YuYongzhi]

@initialcommit-io