Scripting in Go requiring Git

Question

My pet project is a single Go function, in which I call
`cmd := exec.Command("git", "clone", "MY_REPO")`
and do some work in the file system.

Current `railway.json` file has included git:

```{
    "$schema": "https://railway.app/railway.schema.json",
    "build": {
        "nixpacksPlan": {
            "phases": {
                "setup": {
                    "nixPkgs": ["...","git"]
                }
            }
        }
    },
    "deploy": {
        "cronSchedule": "*/5 * * * *"
    }
}```

However the logs in the service show the following:

"exec: "git": executable file not found in $PATH"

Would appreciate some insight, thank you!

Ben