This task is about improving this situation:

Premising that a first sub-task may be to just get rid of the highlighted text duplication (T15489: Diffusion commit feed: avoid to repeat the commit message twice), probably, then, we can further work to then be able to mention part of the commit body, to make the feed even more useful, and to occupy the same space as before. Or, maybe not, and just show the title.

For example, if this is the commit body:

Do something

This change makes the world even better,
because bla bla bla bla
Lol

Ref T123

Then the commit feed should probably become:

Title: hash12391812 Do something
Body: This change makes the world even better

Or, something like that.

Clearly not "Title+Title", and probably better than just the title. Or probably it's better just the Title and nothing else.

Feedback welcome.