The command was using this to check for git repo context:
git rev-parse --is-inside-work-tree
With this change, this is used instead:
git rev-parse --git-dir
The latter approach works in the context of a bare git repository, which does not have a worktree.
The GH_DEBUG environment variable is a new gh-specific verbosity control.
For backwards-compatibility, DEBUG will still be respected if it has values
"1", "true", "yes", and "api", but any other values will be ignored.
Finally, support for "oauth" debug value has been dropped in favor of "api".
The "oauth" value only had limited, internal use.
Co-authored-by: Mislav Marohnić <mislav@github.com>
Our previous command stub mechanism matches stubs sequentially, which leads to brittle tests when the exec calls get reordered or removed in the implementation.
