That looks like a different issue probably related to the initial rollout of Changes to PkgServers storage backend (call for beta testers). I can not reproduce it though:
$ curl -fsSL https://us-west.pkg.julialang.org/registry/23338594-aafe-5451-b93e-139f81909106/69c29d65afe36e25cc466dae1000e0b8b952ee2c | sha256sum
0b3e798df49a80e4068c5b65013c7b23316afe05e529003a4e1a0c3f56fd50b7 -
$ curl -fsSL https://us-east.pkg.julialang.org/registry/23338594-aafe-5451-b93e-139f81909106/69c29d65afe36e25cc466dae1000e0b8b952ee2c | sha256sum
0b3e798df49a80e4068c5b65013c7b23316afe05e529003a4e1a0c3f56fd50b7 -
How did you obtain this body? You seem to have the same number of bytes at least: