Sometimes users need to read conclusions about some commit. They need to find discussion in pull request where such commit was reviewed.
Now one solution, is run Source Tree, find sha1 in Tree View, see into commit message, maybe it will contains 'Merge Pull Request #1234' and then find Pull Request by number.
Or found commit via `git branch -r --contains`, found first branch where was such commit. Found tip of branch, and then perform `git ls-remote | grep 'pull-request' | grep <tip of branch>`
All these ways are hard. Will be nice to have simple finder directly in Stash.