nix-git/nix/sources.json

{
    "home-manager": {
        "branch": "release-23.05",
        "description": "Manage a user environment using Nix  [maintainer=@rycee] ",
        "homepage": "https://nix-community.github.io/home-manager/",
        "owner": "nix-community",
        "repo": "home-manager",
        "rev": "5bac4a1c06cd77cf8fc35a658ccb035a6c50cd2c",
        "sha256": "1lhkqlizabh107mgj9b3fsfzz6cwpcmplkwspqqavwqr9dlmlwc4",
        "type": "tarball",
        "url": "https://github.com/nix-community/home-manager/archive/5bac4a1c06cd77cf8fc35a658ccb035a6c50cd2c.tar.gz",
        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
    },
    "nixpkgs": {
        "branch": "nixos-unstable",
        "description": "Nix Packages collection",
        "homepage": null,
        "owner": "NixOS",
        "repo": "nixpkgs",
        "rev": "db9208ab987cdeeedf78ad9b4cf3c55f5ebd269b",
        "sha256": "0y0npijdqbjmcm3jssinsg32y24l7p6419awwxix6r30m8swc8v3",
        "type": "tarball",
        "url": "https://github.com/NixOS/nixpkgs/archive/db9208ab987cdeeedf78ad9b4cf3c55f5ebd269b.tar.gz",
        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
    }
}