Git diff with remote tag

Question

I'm about to merge a big change from a remote branch (non-origin), and more specifically from a given tag.

There are two remotes then:

1. origin
2. proposal

On the proposal remote, a branch name idea exists, with a tag tagged_idea.

The idea is that I want to review the incoming changes between tagged_idea and my current HEAD. How can I achieve this?

I tried something like git diff .../proposal/tags/tagged_idea but it didn't work well. Any idea?

In other terms, what I would like to see is the result of the merge, before even doing it in my branch. Just like if I did the pull git pull proposal tags/tagged_idea but without actually making the changes.

Answer 1

I use git ls-remote --tags proposal |grep tagged_idea to get the revision hash, then do git diff with the hash.