Merge branch 'ds/for-each-repo-w-worktree'

"git for-each-repo" started from a secondary worktree did not work as expected, which has been corrected. * ds/for-each-repo-w-worktree: for-each-repo: simplify passing of parameters for-each-repo: work correctly in a worktree run-command: extract sanitize_repo_env helper for-each-repo: test outside of repo context