Feature

Currently, it is not possible to fetch from a remote and to remove the deleted remote branches at the same time. This is currently possible with the git fetch command by using the --prune option as described here https://git-scm.com/docs/git-fetch#Documentation/git-fetch.txt---prune.

As suggested in src-d/go-git#624 a bool could be added to the FetchOptions struct.

As a side note, the above issue has been closed without a proper fix because the linked PR only adds the Prune option to the PushOptions struct which is not the same.

Workaround

There is currently no workaround or at least none of I'm aware of.