Fix first commit in preview

[aaronhallaert]

No description provided.

[mmirus]

@aaronhallaert TY for working on this! I gave this a quick test and it seemed to work. 🥳

[mmirus]

Update: I get this error in some cases while traversing the list of commits.

                                                                                                                                                                                                                                                                                                                                                                                              
E5108: Error executing lua ...ed-git-search.nvim/lua/advanced_git_search/git_utils.lua:255: attempt to concatenate a nil value                                                                                                                                                                                                                                                                
stack traceback:                                                                                                                                                                                                                                                                                                                                                                              
        ...ed-git-search.nvim/lua/advanced_git_search/git_utils.lua:255: in function 'get_command'                                                                                                                                                                                                                                                                                            
        ...lescope.nvim/lua/telescope/previewers/term_previewer.lua:207: in function 'preview'                                                                                                                                                                                                                                                                                                
        ...share/nvim/lazy/telescope.nvim/lua/telescope/pickers.lua:1075: in function 'refresh_previewer'                                                                                                                                                                                                                                                                                     
        ...share/nvim/lazy/telescope.nvim/lua/telescope/pickers.lua:1028: in function 'set_selection'                                                                                                                                                                                                                                                                                         
        ...share/nvim/lazy/telescope.nvim/lua/telescope/pickers.lua:792: in function 'move_selection'                                                                                                                                                                                                                                                                                         
        ...e/nvim/lazy/telescope.nvim/lua/telescope/actions/set.lua:39: in function 'run_replace_or_original'                                                                                                                                                                                                                                                                                 
        ...re/nvim/lazy/telescope.nvim/lua/telescope/actions/mt.lua:65: in function 'shift_selection'                                                                                                                                                                                                                                                                                         
        .../nvim/lazy/telescope.nvim/lua/telescope/actions/init.lua:81: in function 'run_replace_or_original'                                                                                                                                                                                                                                                                                 
        ...re/nvim/lazy/telescope.nvim/lua/telescope/actions/mt.lua:65: in function 'key_func'                                                                                                                                                                                                                                                                                                
        ...hare/nvim/lazy/telescope.nvim/lua/telescope/mappings.lua:350: in function 'execute_keymap'                                                                                                                                                                                                                                                                                         
        [string ":lua"]:1: in main chunk                          

LMK if I can provide any more info!