Jujutsu is a relatively new version control system that is designed around working directly with commit-like objects called “changes”1. Each change has an ID, and these IDs are important because they’re the main way of referring to different changes2. To make referencing these IDs a bit easier, Jujutsu often shows ID prefixes rather than the whole ID when displaying commits (such as in the jj log command). This is similar to how Git can show an abbreviated commit hash, (typically 7-8 ch...