git_ref.txt

1. To change the email address associated with your Git commits globally:
   ```
   git config --global user.email "you@example.com"
   ```

2. To change the email address associated with your Git commits for a specific repository:
   ```
   git config user.email "you@example.com"
   ```

3. To create a new branch in Git:
   ```
   git branch new-branch-name
   ```

4. To switch to a different branch:
   ```
   git checkout branch-name
   ```

5. To add a remote repository:
   ```
   git remote add origin <remote-url>
   ```

6. To verify the remote repository URL:
   ```
   git remote -v
   ```

7. To commit changes:
   ```
   git commit -m "Your commit message"
   ```

8. To push a branch to a remote repository:
   ```
   git push -u origin branch-name
   ```

9. To change the author email of existing Git commits:
   ```
   git filter-branch --env-filter '
   if [ "$GIT_COMMITTER_EMAIL" = "<old-email>" ]; then
       export GIT_COMMITTER_EMAIL="<new-email>"
   fi
   if [ "$GIT_AUTHOR_EMAIL" = "<old-email>" ]; then
       export GIT_AUTHOR_EMAIL="<new-email>"
   fi
   ' -- --all
   ```

10. To force-push the changes to the remote repository after modifying the commit history:
    ```
    git push --force --all
    ```