how can I get the git url with lua?

[mosheavni]

I'm using fugitive for git blame buffer,
I'm creating my own custom keymap where I open the commit id in the browser.
assuming I have a commit_id variable, how can I use the lua functions by this plugin to open the git url on the browser with the same commit?

:GitLink rev=5bcf10ad produces:

[gitlinker] fatal: not a git repository (or any of the parent directories): .git

because I'm on the fugitiveblame buffer, it's not a file.
And I don't need a file because I want to see the commit in the browser, with all the included changes.

any ideas?

[mosheavni]

managed to figure it out:

  vim.api.nvim_buf_set_keymap(0, 'n', '<leader>gh', '', {
    noremap = true,
    silent = true,
    desc = 'Open commit hash in browser',
    callback = function()
      local commit_hash = get_commit_hash()
      vim.cmd 'wincmd p'
      require('gitlinker').link {
        action = function(url)
          vim.ui.open(url)
        end,
        router = function(lk)
          print(vim.inspect(lk))
          local builder = 'https://'
          -- host
          builder = builder .. lk.host .. '/'
          -- org
          builder = builder .. lk.org .. '/'
          -- repo
          builder = builder .. (string_endswith(lk.repo, '.git') and lk.repo:sub(1, #lk.repo - 4) or lk.repo) .. '/'
          -- rev
          builder = builder .. 'commit/' .. lk.rev
          return builder
        end,
        rev = commit_hash,
      }
    end,
  })

[mosheavni]

although it's working, I'd love a way to manually provide cwd to linker()