b4 getting confused about lots of versions for a single patch

Running the git version of b4 seems to pick the "wrong" patch in this series:

	https://lore.kernel.org/r/[email protected]

it grabs the "v3 version" despite it saying it picked the v4 version, when really the v5 version is the "right" one:

Looking up [email protected]
Analyzing 16 messages in the thread
Assuming new revision: v5 ([PATCH v3] usb: dwc3: gadget: fix IRQ storm on invalid event buffer count) Looking for additional code-review trailers on lore.kernel.org
Analyzing 5 code-review messages
Will use the latest revision: v4
You can pick other revisions using the -vN flag
Checking attestation on all messages, may take a moment...
---
✗ [PATCH v4] usb: dwc3: gadget: fix IRQ storm on invalid event buffer count
+ Suggested-by: Thinh Nguyen <[email protected]> (✓ DKIM/synopsys.com)
---
✗ BADSIG: DKIM/gmail.com
---
Total patches: 1
---

Applying: usb: dwc3: gadget: fix IRQ storm on invalid event buffer count

Any ideas?

thanks,

greg k-h