Apt update failing on Ubuntu CUDA repo

When I run apt update on Ubuntu 18.04, I am getting

Ign:12 http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64  Packages
Get:12 http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64  Packages [185 kB]
Err:12 http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64  Packages
  File has unexpected size (213860 != 185496). Mirror sync in progress? [IP: 152.195.19.142 80]
  Hashes of expected file:
   - Filesize:185496 [weak]
   - SHA256:f7e866fdb738e4bda095feb338ba61fc8150f584fb4ab1b39a025f58c0e01932
   - SHA1:4462a72d5e4952c9cb747af9678d0a1d85857837 [weak]
   - MD5Sum:4be0b5ad7f6bbec51557955b4906e4eb [weak]
  Release file created at: Wed, 24 Jun 2020 19:48:37 +0000
Fetched 1,533 B in 2s (1,012 B/s)
Reading package lists... Done
E: Failed to fetch http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/Packages.gz  File has unexpected size (213860 != 185496). Mirror sync in progress? [IP: 152.195.19.142 80]
   Hashes of expected file:
    - Filesize:185496 [weak]
    - SHA256:f7e866fdb738e4bda095feb338ba61fc8150f584fb4ab1b39a025f58c0e01932
    - SHA1:4462a72d5e4952c9cb747af9678d0a1d85857837 [weak]
    - MD5Sum:4be0b5ad7f6bbec51557955b4906e4eb [weak]
   Release file created at: Wed, 24 Jun 2020 19:48:37 +0000
E: Some index files failed to download. They have been ignored, or old ones used instead.

This is on a PC that used to update correctly. I also tried installing CUDA on a fresh Ubuntu 18.04 install and got the same result. Is the CUDA repo broken?

This seems to have been resolved. Perhaps the repos were being updated. (Maybe adding Ubuntu 20.04, support?)