diff --git a/lua/gitlinker.lua b/lua/gitlinker.lua
index 1a34f4b..157853c 100644
--- a/lua/gitlinker.lua
+++ b/lua/gitlinker.lua
@@ -1,4 +1,5 @@
 local range = require("gitlinker.range")
+local LogLevels = require("gitlinker.logger").LogLevels
 local logger = require("gitlinker.logger")
 local linker = require("gitlinker.linker")
 local highlight = require("gitlinker.highlight")
@@ -329,15 +330,14 @@ local function link(opts)
   return url
 end
 
---- @param opts gitlinker.Options?
+--- @param opts gitlinker.Options
 --- @return gitlinker.Options
 local function _merge_routers(opts)
   -- browse
   local browse_routers = vim.deepcopy(Defaults.router.browse)
   local browse_router_binding_opts = {}
   if
-    type(opts) == "table"
-    and type(opts.router_binding) == "table"
+    type(opts.router_binding) == "table"
     and type(opts.router_binding.browse) == "table"
   then
     deprecation.notify(
@@ -346,9 +346,7 @@ local function _merge_routers(opts)
     browse_router_binding_opts = vim.deepcopy(opts.router_binding.browse)
   end
   local browse_router_opts = (
-    type(opts) == "table"
-    and type(opts.router) == "table"
-    and type(opts.router.browse) == "table"
+    type(opts.router) == "table" and type(opts.router.browse) == "table"
   )
       and vim.deepcopy(opts.router.browse)
     or {}
@@ -364,8 +362,7 @@ local function _merge_routers(opts)
   local blame_routers = vim.deepcopy(Defaults.router.blame)
   local blame_router_binding_opts = {}
   if
-    type(opts) == "table"
-    and type(opts.router_binding) == "table"
+    type(opts.router_binding) == "table"
     and type(opts.router_binding.blame) == "table"
   then
     deprecation.notify(
@@ -374,9 +371,7 @@ local function _merge_routers(opts)
     blame_router_binding_opts = vim.deepcopy(opts.router_binding.blame)
   end
   local blame_router_opts = (
-    type(opts) == "table"
-    and type(opts.router) == "table"
-    and type(opts.router.blame) == "table"
+    type(opts.router) == "table" and type(opts.router.blame) == "table"
   )
       and vim.deepcopy(opts.router.blame)
     or {}
@@ -396,13 +391,13 @@ end
 
 --- @param opts gitlinker.Options?
 local function setup(opts)
-  local router_configs = _merge_routers(opts)
+  local router_configs = _merge_routers(opts or {})
   Configs = vim.tbl_deep_extend("force", vim.deepcopy(Defaults), opts or {})
   Configs.router = router_configs
 
   -- logger
   logger.setup({
-    level = Configs.debug and "DEBUG" or "INFO",
+    level = Configs.debug and LogLevels.DEBUG or LogLevels.INFO,
     console_log = Configs.console_log,
     file_log = Configs.file_log,
   })
diff --git a/lua/gitlinker/git.lua b/lua/gitlinker/git.lua
index 7c77d76..2bc4011 100644
--- a/lua/gitlinker/git.lua
+++ b/lua/gitlinker/git.lua
@@ -189,6 +189,27 @@ local function _is_rev_in_remote(revspec, remote)
   return false
 end
 
+--- @package
+--- @param remote string
+--- @return boolean
+local function _has_remote_fetch_config(remote)
+  local args = { "git", "config", string.format("remote.%s.fetch", remote) }
+  local result = cmd(args)
+  logger.debug(
+    "|git._has_remote_fetch_config| running %s: %s (error:%s)",
+    vim.inspect(args),
+    vim.inspect(result.stdout),
+    vim.inspect(result.stderr)
+  )
+  local output = result.stdout
+  for _, fetch in ipairs(output) do
+    if type(fetch) == "string" and string.len(vim.trim(fetch)) > 0 then
+      return true
+    end
+  end
+  return false
+end
+
 --- @param host string
 --- @return string?
 local function resolve_host(host)
@@ -250,8 +271,17 @@ local function get_closest_remote_compatible_rev(remote)
     return upstream_rev
   end
 
+  local remote_fetch_configured = _has_remote_fetch_config(remote)
+
   -- try HEAD
-  if _is_rev_in_remote("HEAD", remote) then
+  if remote_fetch_configured then
+    if _is_rev_in_remote("HEAD", remote) then
+      local head_rev = _get_rev("HEAD")
+      if head_rev then
+        return head_rev
+      end
+    end
+  else
     local head_rev = _get_rev("HEAD")
     if head_rev then
       return head_rev
@@ -259,9 +289,19 @@ local function get_closest_remote_compatible_rev(remote)
   end
 
   -- try last 50 parent commits
-  for i = 1, 50 do
-    local revspec = "HEAD~" .. i
-    if _is_rev_in_remote(revspec, remote) then
+  if remote_fetch_configured then
+    for i = 1, 50 do
+      local revspec = "HEAD~" .. i
+      if _is_rev_in_remote(revspec, remote) then
+        local rev = _get_rev(revspec)
+        if rev then
+          return rev
+        end
+      end
+    end
+  else
+    for i = 1, 50 do
+      local revspec = "HEAD~" .. i
       local rev = _get_rev(revspec)
       if rev then
         return rev
diff --git a/lua/gitlinker/logger.lua b/lua/gitlinker/logger.lua
index ec4f295..be0222b 100644
--- a/lua/gitlinker/logger.lua
+++ b/lua/gitlinker/logger.lua
@@ -28,12 +28,10 @@ local PathSeperator = (vim.fn.has("win32") > 0 or vim.fn.has("win64") > 0)
     and "\\"
   or "/"
 
-local Configs = {
+local Defaults = {
   level = LogLevels.INFO,
   console_log = true,
   file_log = false,
-  file_log_dir = vim.fn.stdpath("data"),
-  file_log_name = "gitlinker.log",
   _file_log_path = string.format(
     "%s%s%s",
     vim.fn.stdpath("data"),
@@ -42,21 +40,11 @@ local Configs = {
   ),
 }
 
+local Configs = {}
+
 --- @param opts gitlinker.Options?
 local function setup(opts)
-  Configs = vim.tbl_deep_extend("force", vim.deepcopy(Configs), opts or {})
-  if type(Configs.level) == "string" then
-    Configs.level = LogLevels[Configs.level]
-  end
-
-  if Configs.file_log then
-    Configs._file_log_path = string.format(
-      "%s%s%s",
-      Configs.file_log_dir,
-      (vim.fn.has("win32") > 0 or vim.fn.has("win64") > 0) and "\\" or "/",
-      Configs.file_log_name
-    )
-  end
+  Configs = vim.tbl_deep_extend("force", vim.deepcopy(Defaults), opts or {})
   assert(
     type(Configs.level) == "number" and LogHighlights[Configs.level] ~= nil
   )
@@ -72,12 +60,6 @@ local function log(level, msg)
   local msg_lines = vim.split(msg, "\n", { plain = true })
   if Configs.console_log and level >= LogLevels.INFO then
     local msg_chunks = {}
-    -- local prefix = ""
-    -- if level == LogLevels.ERROR then
-    --     prefix = "error! "
-    -- elseif level == LogLevels.WARN then
-    --     prefix = "warning! "
-    -- end
     for _, line in ipairs(msg_lines) do
       table.insert(msg_chunks, {
         string.format("[gitlinker] %s", --[[prefix,]] line),
@@ -132,6 +114,7 @@ local function ensure(cond, fmt, ...)
 end
 
 local M = {
+  LogLevels = LogLevels,
   setup = setup,
   debug = debug,
   info = info,
diff --git a/test/git_spec.lua b/test/git_spec.lua
index c71aec9..61cbdeb 100644
--- a/test/git_spec.lua
+++ b/test/git_spec.lua
@@ -8,14 +8,13 @@ describe("git", function()
   before_each(function()
     vim.api.nvim_command("cd " .. cwd)
     vim.opt.swapfile = false
-    local logger = require("gitlinker.logger")
-    logger.setup()
     vim.cmd([[ edit lua/gitlinker.lua ]])
   end)
 
+  local LogLevels = require("gitlinker.logger").LogLevels
   local logger = require("gitlinker.logger")
   logger.setup({
-    level = "DEBUG",
+    level = LogLevels.DEBUG,
     console_log = true,
     file_log = true,
   })
diff --git a/test/logger_spec.lua b/test/logger_spec.lua
index ab5db8a..d305de5 100644
--- a/test/logger_spec.lua
+++ b/test/logger_spec.lua
@@ -9,9 +9,10 @@ describe("logger", function()
     vim.api.nvim_command("cd " .. cwd)
   end)
 
+  local LogLevels = require("gitlinker.logger").LogLevels
   local logger = require("gitlinker.logger")
   logger.setup({
-    level = "DEBUG",
+    level = LogLevels.DEBUG,
     console_log = true,
     file_log = true,
   })