How a detached node could merge into a git branch?

Question

I am using GitKraken on Windows. While I was pulling remote branch into local, I saw this wired log graph, circled in the image . It looks like there's a detached node, a node without parent, but it is able to merge with another branch...not sure what does this means, any idea?

Update after @VonC's comment

In this image, the commit with hash prefix 52a66d2 is the problematic one, and it looks like it had a parent in this view.

So maybe it is GitKraken 's fault?

Answer 1

I found out commit 52a66d2 is committed almost 3 hours earlier than its parent which commit 3058015

That means 52a66d2 has a parent (3058015), and its parent link is shown.

But the display order might not be topological (the parents are not always shown before the children) but using --date=relative .

(see also git show-branch , which defines the two orders)