I have a branch dhcp-format which is based on dhcp-reader which is based on master (infra.git).

Branch dchp-reader was uploaded to Gerrit yesterday, and rebased locally (but not on Gerrit) with new commits.

Branch dhcp-format has a single commit on top of dhcp-reader, and I'm trying to upload a CL for it. Here's what I get:

Presubmit checks passed.
 go/src/infra/crimson/cmd/cmdhelper/cmdhelper.go            | 14 ++++++++++++++
 go/src/infra/crimson/cmd/cmdhelper/cmdhelper.infra_testing |  4 ++--
 go/src/infra/crimson/cmd/cmdhelper/cmdhelper_test.go       | 75 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 91 insertions(+), 2 deletions(-)
Upload upstream branch dhcp-reader first.
Note: maybe you've uploaded it with --no-squash. If so, then re-upload it with:
    git cl upload --squash

The "upload upstream branch" confused me, since I knew it was uploaded. I'm not sure what "--squash" means (isn't it always squashed anyway?), so I rebased the upstream branch and reuploaded the new patchset.

Then 'git cl upload' on the new branch actually went through.

I think we should change the message to something like "please rebase and reupload upstream branch...".

And, even better, maybe we could have a git cl upload-recursive (or whatever the name) to upload all the upstream branches recursively if needed.

The downstream CL that I finally uploaded is https://chromium-review.googlesource.com/c/380302/

Thanks!