get commit hash by pull request ID

[AlonKaganArgus]

Hi there

I want to change the build status via REST API. So I use:

/2.0/repositories/{username}/{repo_slug}/commit/{node}/statuses/build

but, I have to provide {node}, which is "The commit's SHA1."

I've seen that I can get the commit's SHA1 using /2.0/repositories/{username}/{repo_slug}/commits.

But at no other place (that I could find). And there is no identifier of which pull request is which.

Is there a way to get a commit's SHA1 by pull request id?

EDIT: I found a way: /2.0/repositories/{username}/{repo_slug}/pullrequests/{pull_request_id}/commits.

It lists the commits of a specific pull request. But I am interested in the latest one. can I be sure that the first commit in the list is the latest one?

[Julius Davies [bit-booster.com] · Accepted solution]

The docs don't really say much about the commits this particular REST endpoint returns.

I'm sure if you test it you can figure out what it currently does, and there's a strong likelihood the current behaviour will be stable and reliable for a long time.

But if you're paranoid you could run all the commits it finds through this command (using a local clone):

git merge-base --independent <commits...>

That will return the "tip" commit among the commits supplied.