Your private repositories are locked when you downgrade your paid account to a free one, or if your paid plan is seriously past due because of billing problems.
You can unlock and access your private repositories by updating your account's payment method and resuming paid status. We do not ask you to pay for the time elapsed in locked mode.
We won't delete your locked private repositories or make them public. After a period of nonpayment, GitHub reserves the right to delete content from locked repositories.
Unlocking a personal account locked due to a declined payment
If your personal account was locked due to a declined payment, you'll need to update your billing information to trigger a newly authorized charge. For more information, see "Updating your personal account's payment method."
If the new billing information is approved, we will immediately charge your account, and the personal account will automatically unlock when a successful payment has been made.
Unlocking a personal account locked due to a plan downgrade
If your private repositories were locked because your plan was downgraded to free, you can: