Re: [BUG] `git reset --hard` fails with `update = none` submodules

[Rose Kunkel <rose@rosekunkel.me>]

Potentially relevant: `git config --global --list` shows
```
status.showstash=true
status.submodulesummary=true
submodule.recurse=true
user.name=Rose Kunkel
user.email=rose@rosekunkel.me
pull.rebase=false
init.defaultbranch=main
```

On Tue, Jun 15, 2021 at 5:57 PM Rose Kunkel <rose@rosekunkel.me> wrote:
>
> Running `git status` in the resulting repository gives
> ```
> On branch master
> Your branch is up to date with 'origin/master'.
>
> nothing to commit, working tree clean
> ```
>
> This is the output from the clone command:
> ```
> Cloning into 'tree-sitter-langs'...
> remote: Enumerating objects: 609, done.
> remote: Counting objects: 100% (83/83), done.
> remote: Compressing objects: 100% (52/52), done.
> remote: Total 609 (delta 40), reused 58 (delta 24), pack-reused 526
> Receiving objects: 100% (609/609), 117.17 KiB | 1.05 MiB/s, done.
> Resolving deltas: 100% (322/322), done.
> Submodule 'repos/agda'
> (https://github.com/tree-sitter/tree-sitter-agda) registered for path
> 'repos/agda'
> Submodule 'repos/bash'
> (https://github.com/tree-sitter/tree-sitter-bash) registered for path
> 'repos/bash'
> Submodule 'repos/c' (https://github.com/tree-sitter/tree-sitter-c)
> registered for path 'repos/c'
> Submodule 'repos/c-sharp'
> (https://github.com/tree-sitter/tree-sitter-c-sharp) registered for
> path 'repos/c-sharp'
> Submodule 'repos/cpp' (https://github.com/tree-sitter/tree-sitter-cpp)
> registered for path 'repos/cpp'
> Submodule 'repos/css' (https://github.com/tree-sitter/tree-sitter-css)
> registered for path 'repos/css'
> Submodule 'repos/elm' (https://github.com/razzeee/tree-sitter-elm)
> registered for path 'repos/elm'
> Submodule 'repos/fluent'
> (https://github.com/tree-sitter/tree-sitter-fluent) registered for
> path 'repos/fluent'
> Submodule 'repos/go' (https://github.com/tree-sitter/tree-sitter-go)
> registered for path 'repos/go'
> Submodule 'repos/html'
> (https://github.com/tree-sitter/tree-sitter-html) registered for path
> 'repos/html'
> Submodule 'repos/janet-simple'
> (https://codeberg.org/sogaiu/tree-sitter-janet-simple) registered for
> path 'repos/janet-simple'
> Submodule 'repos/java'
> (https://github.com/tree-sitter/tree-sitter-java) registered for path
> 'repos/java'
> Submodule 'repos/javascript'
> (https://github.com/tree-sitter/tree-sitter-javascript) registered for
> path 'repos/javascript'
> Submodule 'repos/jsdoc'
> (https://github.com/tree-sitter/tree-sitter-jsdoc) registered for path
> 'repos/jsdoc'
> Submodule 'repos/json'
> (https://github.com/tree-sitter/tree-sitter-json) registered for path
> 'repos/json'
> Submodule 'repos/julia'
> (https://github.com/tree-sitter/tree-sitter-julia) registered for path
> 'repos/julia'
> Submodule 'repos/ocaml'
> (https://github.com/tree-sitter/tree-sitter-ocaml) registered for path
> 'repos/ocaml'
> Submodule 'repos/php' (https://github.com/tree-sitter/tree-sitter-php)
> registered for path 'repos/php'
> Submodule 'repos/python'
> (https://github.com/tree-sitter/tree-sitter-python) registered for
> path 'repos/python'
> Submodule 'repos/ruby'
> (https://github.com/tree-sitter/tree-sitter-ruby) registered for path
> 'repos/ruby'
> Submodule 'repos/rust'
> (https://github.com/tree-sitter/tree-sitter-rust) registered for path
> 'repos/rust'
> Submodule 'repos/scala'
> (https://github.com/tree-sitter/tree-sitter-scala) registered for path
> 'repos/scala'
> Submodule 'repos/swift'
> (https://github.com/tree-sitter/tree-sitter-swift) registered for path
> 'repos/swift'
> Submodule 'repos/typescript'
> (https://github.com/tree-sitter/tree-sitter-typescript) registered for
> path 'repos/typescript'
> Skipping submodule 'repos/agda'
> Skipping submodule 'repos/bash'
> Skipping submodule 'repos/c'
> Skipping submodule 'repos/c-sharp'
> Skipping submodule 'repos/cpp'
> Skipping submodule 'repos/css'
> Skipping submodule 'repos/elm'
> Skipping submodule 'repos/fluent'
> Skipping submodule 'repos/go'
> Skipping submodule 'repos/html'
> Skipping submodule 'repos/janet-simple'
> Skipping submodule 'repos/java'
> Skipping submodule 'repos/javascript'
> Skipping submodule 'repos/jsdoc'
> Skipping submodule 'repos/json'
> Skipping submodule 'repos/julia'
> Skipping submodule 'repos/ocaml'
> Skipping submodule 'repos/php'
> Skipping submodule 'repos/python'
> Skipping submodule 'repos/ruby'
> Skipping submodule 'repos/rust'
> Skipping submodule 'repos/scala'
> Skipping submodule 'repos/swift'
> Skipping submodule 'repos/typescript'
> ```
>
> On Tue, Jun 15, 2021 at 5:51 PM brian m. carlson
> <sandals@crustytoothpaste.net> wrote:
> >
> > On 2021-06-16 at 00:16:06, Rose Kunkel wrote:
> > > # What did you do before the bug happened? (Steps to reproduce your issue)
> > > 1. Clone a git repository that sets `update = none` in .gitmodules:
> > > $ git clone --recurse-submodules https://github.com/ubolonton/tree-sitter-langs
> > >
> > > 2. Perform a hard reset:
> > > $ cd tree-sitter-langs
> > > $ git reset --hard
> > >
> > > # What did you expect to happen? (Expected behavior)
> > > The reset should succeed and do nothing.
> >
> > I think we're in agreement on this.  This should be a fresh clone and so
> > a hard reset should change nothing.
> >
> > > # What happened instead? (Actual behavior)
> > > The reset command fails with
> > > ```
> > > fatal: not a git repository: ../../.git/modules/repos/agda
> > > fatal: could not reset submodule index
> > > ```
> >
> > Hmmm, I can't reproduce this behavior.  What I see is this:
> >
> >   $ git reset --hard
> >   HEAD is now at 5d362ce Release 0.10.0
> >
> > I'm running git version 2.32.0.272.g935e593368 on Debian sid (with the
> > experimental packages).
> >
> > Can you try the clone and run a "git status" command in the repository
> > to see if anything is modified after your clone?  Are the submodules
> > checked out when you perform the clone?  In my case, I see lines like
> > this:
> >
> >   Skipping submodule 'repos/agda'
> >
> > If you're seeing something different, then that might contribute to the
> > different behavior we're seeing.
> > --
> > brian m. carlson (he/him or they/them)
> > Toronto, Ontario, CA