What is the purpose of a commit object in git?

In git, a commit object is used to record a snapshot of each submission. Each new submission creates a new commit object.

The commit object is primarily used to store the following information:

1. The name and email of the author and submitter are required.
2. The submission date and time.
3. Submitted messages or comments.
4. The parent commit object corresponds to the previous commit object of the current commit object.

The primary purpose of using commit objects includes:

1. View submission history: Detailed information about each submission, including the submitter, date, and message, can be viewed through commit objects.
2. Performing version control: By using commit objects, it is possible to switch between different commits in order to view or restore specific snapshots of a project.
3. Merging branches: By using commit objects, you can identify the node where branches are merged to preserve the history of the merge operation.
4. Code review: By examining commit objects, you can easily see the differences in each submission, making it convenient for code review and discussion.

You can use git commands and related tools to operate and manage commit objects, such as git log, git show, git revert, and so on.