the channel command prints irrelevant git output #128025
Description
When changing channel with flutter channel, the command prints a bunch of scary looking output from git, with a red font that looks "errorish":
Switching to flutter channel 'stable'...
git: From https://github.com/flutter/flutter
git: + 0df8557c56...350d2c3a6c beta -> origin/beta (forced update)
git: * [new branch] b123315 -> origin/b123315
git: * [new branch] dependabot/github_actions/codecov/codecov-action-3.1.4 -> origin/dependabot/github_actions/codecov/codecov-action-3.1.4
git: * [new branch] dependabot/github_actions/google/mirror-branch-action-2.0 -> origin/dependabot/github_actions/google/mirror-branch-action-2.0
git: * [new branch] fix_devtools_start_paused -> origin/fix_devtools_start_paused
git: 7be6b570a7..c48ceda6b5 flutter-3.10-candidate.1 -> origin/flutter-3.10-candidate.1
git: * [new branch] flutter-3.10-candidate.10 -> origin/flutter-3.10-candidate.10
git: * [new branch] flutter-3.10-candidate.11 -> origin/flutter-3.10-candidate.11
git: * [new branch] flutter-3.10-candidate.12 -> origin/flutter-3.10-candidate.12
git: * [new branch] flutter-3.10-candidate.13 -> origin/flutter-3.10-candidate.13
git: * [new branch] flutter-3.10-candidate.14 -> origin/flutter-3.10-candidate.14
git: * [new branch] flutter-3.10-candidate.15 -> origin/flutter-3.10-candidate.15
git: * [new branch] flutter-3.10-candidate.16 -> origin/flutter-3.10-candidate.16
git: * [new branch] flutter-3.10-candidate.17 -> origin/flutter-3.10-candidate.17
git: * [new branch] flutter-3.10-candidate.18 -> origin/flutter-3.10-candidate.18
git: * [new branch] flutter-3.10-candidate.2 -> origin/flutter-3.10-candidate.2
git: * [new branch] flutter-3.10-candidate.3 -> origin/flutter-3.10-candidate.3
Isn't this an implementation detail with zero relevance for the developer, and thus something we should hide?