We are trying to set up an experimental branch following the public instructions here: https://www.chromium.org/developers/experimental-branches

After cloning the repo, we are having trouble with the "git push" at the end. Getting:

! [remote rejected]           HEAD -> refs/experimental/yusufo/mtm (prohibited by Gerrit: create not permitted for refs/experimental/yusufo/mtm)
error: failed to push some refs to 'https://chromium.googlesource.com/experimental/chromium/src'


I have some follow up questions on tools available for an experimental branch, once we resolve this.

1) Any way to upload CLs through git cl upload (even though there is no trybot, CQ etc, just to use for review).

2) Any restrictions on official release builds