Show commit hash or short commit hash in changes

[wuservices]

I was wondering if it was possible to customize the output or content of {changes}. It'd be great if we could show the commit hash or short commit hash for each change and customize what's shown for each one.

Here's an example from https://github.com/PeteGoo/tcSlackBuildNotifier:

[alexkvak]

Sorry for delay. What is your use case?
I guess commit hash without link to repo is useless. Isn't it?

[wuservices]

The use case is knowing exactly what was deployed or built and also being able to quickly find that in version control e.g. in Git or on GitHub or Bitbucket. This is especially important if 2 commits have the same name, which is likely to happen if there have been force pushes lately.

It'd be even more convenient if you could add a link to the hash that goes to the URL of your choice (e.g. to go to GitHub or Bitbucket), but the use case is still the same.