Monorepo precommit hook says "Not a git repository: '.git'"

I have a monorepo using Lerna. Here's the structure for my example:

```
my-monorepo/
package.json
packages/
my-package/
package.json
```

In `my-monorepo/packages/my-package/package.json`, I have a script: `"precommit": "yarn buildExports && git add ./exports"`.
In `my-monorepo/package.json` I have a script: `"precommit": "lerna run precommit"`.

When I run `yarn precommit` inside my package, it works correctly.
When I run `yarn precommit` in the root of my repo, it works correctly.
But when I run `yarn git-cz` and complete the flows to get it to trigger my precommit script, I get:

```
lerna ERR! Error: Command failed: yarn run precommit
lerna ERR! fatal: Not a git repository: '.git'
lerna ERR! error Command failed with exit code 128.
```

I have not been able to find anything in lerna or in cz-cli to help me with this. Any help would be greatly appreciated.