Commits on Jun 14, 2024

1. git: Fix submodule fetch, rewrite logic …

   The logic for this was quite broken and had several failure cases due to that. This commit re-writes that to be saner.
   
   Changes:
   - Individual exec commands are all split out to separate functions so that they can be more easily composed. No function does more than a single command
   - Control flow now happens entirely in the Fetch() function
   - Before there were several failure states around submodules due to the `git switch` command happening immediately after the `git fetch` if the repo was already cloned. This is fixed by moving to a unified control flow.
   - `Fetch()` will now run either the initial clone OR update refs before moving onto further steps
   - `git clone` no longer attempts to initialize submodules. Several features from `git submodules` aren't yet implemented by `git clone` and so submodule initialization is moved entirely into a `git submodule` command
   - `git switch` now happens after the clone/fetch but before `git submodule`
   - `git switch` now no longer runs with any submodule-related flags. Like `git clone` the features we need are just not implemented yet and as far as I can tell there are subtle behavioral differences that were causing issues.
   - `git submodule` will now use `--filter=blob:none` to specify that submodule checkouts should themselves be blobless when possible. As far as I can tell this works correctly with `--recursive` and recursive submodules.
   - Because we are now checking out submodules with blobless clones when possible the `fixPermissions()` logic has been updated to account for promisor files that could be in submodule `.git` directories

   

   ReillyBrogan committed Jun 14, 2024
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