在github上的pull请求成功合并后提交dissapier

Question

After succesfull merge of pull request on github a commit dissapear with code.

In github it looks like this: merge commit has number and two parents, but in tree there are no merge commit at all:

And also now github say that two branches are at one (feature/OLFU-8334 and feature/OLFU-8471):

How it can be? I need to know to prevent such strange behaviour in future.

Answer 1

There is way too little information too provided a good answer. But the merge has most likely ended as a fast-forward merge.

Answer 2

原因是手动更改了git历史记录。