warning: ignoring broken ref refs/remotes/origin/HEAD
➜ ✗ g symbolic-ref refs/remotes/origin/HEAD refs/remotes/origin/develop
➜ ✗ g fetch --prune
➜ ✗ g gc
warning: ignoring broken ref refs/remotes/origin/HEAD
➜ ✗ g symbolic-ref refs/remotes/origin/HEAD refs/remotes/origin/develop
➜ ✗ g fetch --prune
➜ ✗ g gc
Using some of the information from this article, and information from a few other sources, I have come up with a procedure for connecting two separate local DDEV containers for Drupal 7 to Drupal 9 migration work.