How Git Works
- Current repository changes
- To understand we will be using plumbing commands
git cat-file -t <commit-id>
git cat-file -p <commit-id>
- Commit is an SHA-1 hash of
- parent
- author
- message
- date time
- contents
- Git reference objects
- branch
- tag
- What is branch in git?
- Branch is a reference object which points to some commit id, Branch points to a new commit id when a new commit happens
- What is tag in git?
- tag is a reference object which points to some commit id and doesnot move with new commits
- Lets figure from latest commit on develop branch
3306f46
- tree in git represents folder/directory and blob/object represents file
- lets view contents of tree in latest commit
Merging Changes between Branches
- Consider the following history
- we need changes from develop branch into master branch
- now checkout to master and then execute merge
git checkout master
git merge develop
- When git cannot merge changes due to different content in same lines it will raise conflicts.
- After fixing conflicts, add the changes and commit them which leads to creation of new commit with two parents
- This is called as three way merge
-
Consier the following
- We need to have all the changes in develop branch into master
Terms
- Hashing
