Show changes in DVC tracked file and directories.
Compare DVC tracked files from different Git commits, tags, and branches w.r.t the current workspace
$ dvc diff [commit_hash/tag/branch]
$ dvc diff [revision_b] [revision_a]
$ dvc diff --show-hash [commit]
$ dvc diff --show-json --show-hash [commit]
$ dvc diff --show-md --show-hash [commit]