If someone deleted a remote branch because the work is over and I don\'t know, I won\'t do a git fetch --prune and eventually I will push back the deleted branc
git fetch --prune
If you want to always prune when you fetch, I can suggest to use Aliases.
prune
fetch
Just type git config -e to open your editor and change the configuration for a specific project and add a section like
git config -e
[alias] pfetch = fetch --prune
the when you fetch with git pfetch the prune will be done automatically.
git pfetch