Concurrent downloads of the same LFS file

One of our customers sees repeated successful download of the same LFS file

{"severity":"INFO","time":"2019-12-06T00:13:21.807Z","correlation_id":"92267f71-76dc-4ed9-9224-0475203ff352","class":"Gitlab::Geo::LfsTransfer","message":"Successful downloaded","job_id":"0aeeafa5b777fc9700ca0679","filename":"/opt/data/git-lfs/c9/29/eef386f0e189cf894e973bcd0b78068d312b5c4499655d0c62716e6b0b26","file_size_bytes":21232}
{"severity":"INFO","time":"2019-12-06T00:14:40.775Z","correlation_id":"92267f71-76dc-4ed9-9224-0475203ff352","class":"Gitlab::Geo::LfsTransfer","message":"Successful downloaded","job_id":"bfcc5ce2ac7984ffb4558573","filename":"/opt/data/git-lfs/c9/29/eef386f0e189cf894e973bcd0b78068d312b5c4499655d0c62716e6b0b26","file_size_bytes":21232}
{"severity":"INFO","time":"2019-12-06T00:16:00.641Z","correlation_id":"92267f71-76dc-4ed9-9224-0475203ff352","class":"Gitlab::Geo::LfsTransfer","message":"Successful downloaded","job_id":"75f8f5f0d0320a978fefed9e","filename":"/opt/data/git-lfs/c9/29/eef386f0e189cf894e973bcd0b78068d312b5c4499655d0c62716e6b0b26","file_size_bytes":21232}
{"severity":"INFO","time":"2019-12-06T00:17:20.137Z","correlation_id":"92267f71-76dc-4ed9-9224-0475203ff352","class":"Gitlab::Geo::LfsTransfer","message":"Successful downloaded","job_id":"ca66d6190d77ff525714dc80","filename":"/opt/data/git-lfs/c9/29/eef386f0e189cf894e973bcd0b78068d312b5c4499655d0c62716e6b0b26","file_size_bytes":21232}
{"severity":"INFO","time":"2019-12-06T00:18:41.299Z","correlation_id":"92267f71-76dc-4ed9-9224-0475203ff352","class":"Gitlab::Geo::LfsTransfer","message":"Successful downloaded","job_id":"09088e053ed2422ebe3825ff","filename":"/opt/data/git-lfs/c9/29/eef386f0e189cf894e973bcd0b78068d312b5c4499655d0c62716e6b0b26","file_size_bytes":21232}
{"severity":"INFO","time":"2019-12-06T00:20:00.267Z","correlation_id":"92267f71-76dc-4ed9-9224-0475203ff352","class":"Gitlab::Geo::LfsTransfer","message":"Successful downloaded","job_id":"75393c078f8d771977cae57b","filename":"/opt/data/git-lfs/c9/29/eef386f0e189cf894e973bcd0b78068d312b5c4499655d0c62716e6b0b26","file_size_bytes":21232}

Internal issue https://gitlab.com/gitlab-com/geo-customers/issues/3#note_257446621