The "committed identity unknown" error usually occurs when Git is unable to associate your commits with a valid identity (i.e., your username and email address). This can happen for a few different reasons, such as:

1. Your Git configuration is not set up correctly: Check that your Git configuration is set up with your correct username and email address. You can use the following commands to check and set your configuration:

git config --global user.name "Your Name"
git config --global user.email "your.email@example.com"

Make sure that the email address you use matches the email address associated with your GitHub account

2. Your SSH key is not associated with your account: If you're using SSH to authenticate with GitHub, make sure that your SSH key is associated with your account. You can check this by going to your account settings on the GitHub and verifying that your SSH key is listed.

3. Your repository permissions are not set up correctly: If you recently moved your repository to a new organization account, it's possible that your permissions are not set up correctly. Make sure that you have the appropriate permissions to push and pull from the repository.

Additionally, you may want to reach out to the GitHub support