From the log you linked:
Get:263 http://ftpmaster.internal/ubuntu hirsute-proposed/main amd64 network-manager amd64 1.28.0-2ubuntu1 [2002 kB]
From the log you linked:
Get:263 http:// ftpmaster. internal/ ubuntu hirsute- proposed/ main amd64 network-manager amd64 1.28.0-2ubuntu1 [2002 kB]