I have used git blame with --first-parent to get the 'un-expanded' commit identifier in the blame view.

I'm rather new to the --first-parent flag myself but I think it works with anything that supports revision options.

Here's what I see in git 2.8.1:

  usage: git blame [<options>] [<rev-opts>] [<rev>] [--] <file>  
      <rev-opts> are documented in git-rev-list(1)

And --first-parent is listed as an option here: https://www.git-scm.com/docs/git-rev-list