x/build/cmd/gerritbot: sometimes fails to close PR after its imported CL is submitted #35867
Description
We should investigate why gerritbot didn't close a PR that was imported into Gerrit as a CL and submitted.
- PR net/http: fix Server.ConnContext modifying context for all new connections #35751
- imported as CL 208318
See #35751 (comment) for more details.
Thanks @odeke-em for noticing and reporting.