Knittl [off-list ref] writes:
From b1c2b07aa1f5db25ebdf190aa12ccb66a17f131a Mon Sep 17 00:00:00 2001
From: Daniel Knittl-Frank <redacted>
Date: Sun, 26 Sep 2010 11:29:16 +0200
Subject: [PATCH] builtin/fetch: print hash of deleted tag when updating
`git fetch --tags` will unconditionally update (and thus overwrite)
existing tags, which is especially annoying for annotated and signed
tags.
The first question is why s/he is running fetch with --tags if overwriting
is unwelcome/annoying. "--tags" is meant to be used when the auto-follow
behaviour of normal fetch is not sufficient and the user actively wants to
get the latest (potentially updated) ones; would it be possible that you
are solving a wrong problem?