Confusion about coverage data of auto-created commit

Description

After some PR merged, one merge commit will be created. (Example as below.)

Here are two PRs:

  1. PR1, wants to be merged into branch develop.
  2. PR2, wants to be merged into branch master.

Merging PR1 leads one new commit called C1. Merging PR2 leads one new commit called C2.

Here is my question:

Using API as below to get the detail info of C1 and C2, only C2 can be got. Why there’s no info of C1?

GET /api/gh/:owner/:repo/commit/:sha

@fansi404, can you give specific SHAs and the API calls?