What do you mean "packet"? I had a look at the manual and it's very confusing, it says this is the same as sudo apt-get −−ignore−missing install , e.g. it doesn't download any missing packages, it ignores them instead
As far as I am aware, the command sudo apt-get --fix-missing install will download any missing packages which may be missing from your system, this would normally relate to missing dependencies!.
it will only hold back a package it cannot find otherwise it will download it!:
If a package is selected for installation (particularly if it is mentioned on the command line) and it could not be downloaded then it will be silently held back. Configuration Item: APT::Get::Fix-Missing.