git cat-file

Provide content or type and size information for Git repository objects. More information: https://git-scm.com/docs/git-cat-file.

• Get the size of the HEAD commit in bytes:

git cat-file -s HEAD

• Get the type (blob, tree, commit, tag) of a given Git object:

git cat-file -t 8c442dc3

• Pretty-print the contents of a given Git object based on its type:

git cat-file -p HEAD~2