git prune

Learn unreachable object cleanup with git prune.

What is git prune?

git prune is used to remove objects that cannot be reached through any reference in a Git repository. These objects may no longer be pointed to by a branch, tag, or another reference.

git prune --dry-run

You can use the --dry-run option to see which objects could be removed before cleanup. Prune should be used carefully because the operation may not be reversible.

Check before cleanup

A prune operation can permanently delete objects. Therefore, it is safer to first check which objects would be removed using the --dry-run option.

git prune --dry-run
git prune

The first command only displays objects that could be removed. The second command actually cleans up eligible objects. Git's protection and reachability rules mean that not every old object is necessarily deleted immediately.

Exercise Run a prune preview

Preview the removal of unreachable objects in the repository. Do not perform the actual deletion. Print a message indicating that the preview is complete.

Show example solution

git prune --dry-run
echo 'Prune önizlemesi tamamlandı'

Test yourself

Which command is used to remove Git objects that are not referenced by a branch or another reference?
- git log --all
- git gc --auto
- git prune
- git fsck --full
Show answer

git prune — <code>git prune</code> is used to remove unreachable objects from the repository.
Preview before deletion
```
git prune ____
```
Show answer
```
git prune --dry-run
```
Unreachable objects

git prune

Removes unreachable objects
Unreachable

Cannot be reached from a reference
--dry-run

Previews objects to be removed
Git nesnesi

Stores commit or file data

Next lesson: git fsck

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