How to get parent of specific commit in Git?

Question

I have commit number. I would like to get previous commit number(parent). I need commits from current branch.

Answer 1

To get Parent Commit

git cat-file -p commit_id

tree tree_id
parent parent_commit_id
[parent other_parent_commit_id] # present only in case of merge commits
author xxx  1513768542 +0530
committer xxx  1513768542 +0530