Compare file contents between two revisions. More information: https://jj-vcs.github.io/jj/latest/cli-reference/#jj-diff.
jj diff
B::D, A..D, B|C|D, etc.):jj diff {{[-r|--revisions]}} {{revsets}}
jj diff {{[-f|--from]}} {{from_revset}} {{[-t|--to]}} {{to_revset}}
jj diff --stat
jj diff --git