fix(git): add env option for util.exec

lua/git/util.lua

@@ -192,6 +192,7 @@ end
 ---@field cwd string?
 ---@field stdin string?
 ---@field silent boolean?
+---@field env table<string, string>?
 ---@field on_exit fun(result: vim.SystemCompleted)?
 
 ---@param cmd string[]
@@ -222,10 +223,16 @@ function M.exec(cmd, opts)
     return result.stdout or ""
 end
 
+M.DEFAULT_GIT_ENV = {
+    GIT_TERMINAL_PROMPT = "false",
+}
+
 ---@param args string[]
 ---@param opts ow.Git.Util.ExecOpts?
 ---@return string?
 function M.git(args, opts)
+    opts = opts or {}
+    opts.env = vim.tbl_extend("force", M.DEFAULT_GIT_ENV, opts.env or {})
     local cmd = { "git" }
     vim.list_extend(cmd, args)
     return M.exec(cmd, opts)