How do I undo 'git reset'?

 

If you've performed a git reset and want to undo it, you can use the git reflog and git reset commands to restore your repository to the previous state. The git reflog command shows a log of reference updates, including those of branches and HEAD. You can use it to find the commit you want to return to, and then use git reset to restore your repository to that commit.

Here's an example:

Let's say you have the following commit history:

css

A - B - C (master)
         ↑
       HEAD

You mistakenly performed a git reset and now want to undo it:

1. First, use git reflog to view the history of reference updates:

bash

git reflog

You'll see a list of recent commits and actions. Find the commit you want to return to (it might be labeled as HEAD@{n} where n is a number).

2. Copy the commit hash of the commit you want to return to.

3. Use git reset to restore the repository to that commit:

bash

git reset <commit-hash>

For example:

bash

git reset HEAD@{2}  # Use the appropriate commit hash from your reflog

After running this command, your repository will be restored to the state it was at the chosen commit, effectively undoing the previous git reset.

Keep in mind that using git reset and git reflog can be powerful, but it's also important to double-check the commit you're resetting to, as these commands modify your repository's history.