1.15. 快速参考
git cat-file <type> <object-id>
Display the specified object, where is one of commit, tree, blob, or tag.
git cat-file -t <object-id>
Output the type of the specified object.
git ls-tree <tree-id>
Display a pretty version of the specified tree object.
git gc
Perform a garbage collection on the object database.
git update-index [--add] <file>
Stage the specified file, using the optional --add flag to denote a new untracked file.
git write-tree
Generate a tree from the index and store it in the object database. Returns the ID of the new tree object.
git commit-tree <tree-id> -p <parent-id>
Create a new commit object from the given tree object and parent commit. Returns the ID of the new commit object.