- Add `--` terminator before submodule paths (both clone and refresh
paths) so a path beginning with `-` cannot be parsed as a git option.
- Reword the refresh-fetch comment: this fetch also runs when ref is
None, in which case it pulls the remote default branch.
Fixesesphome/esphome#11550
When clone_or_update is called with a ref or submodules, the initial
clone uses --depth=1 but the subsequent git fetch and git submodule
update commands run deep, pulling the full history on every refresh.
This causes excess network traffic and disk usage for external_components,
packages, and dashboard imports.
Add --depth=1 to all four call sites (initial fetch, initial submodule
init, refresh fetch, refresh submodule update). Shallow fetches still
advance the local clone to the current remote tip when it moves, so the
refresh path keeps working as before.
J. Nick Koston