You will start with the original W-2 and will replace the HSA information with the W2c which you received.
You can either edit your original W-2 information so it matches the corrected W-2, or you can delete it and enter the corrected W-2. Since your W-2c only has the information for HSA, in this case, you will use the original W-2 information but will replace the HSA information with the updated numbers.
Additionally, once you input the W-2 information and press continue and proceed, there will be a screen with the title "Let's check for uncommon situations". On this screen, there will be an option for "W-2 was corrected by my employer". You will check this box.