How to choose the correct HEAD in a file with git

I have a file to which I do a git show plus the short SHA value, and it throws me the following:

diff --git a/inc/ticket.class.php b/inc/ticket.class.php
index 1108eac..cf68362 100644
--- a/inc/ticket.class.php
+++ b/inc/ticket.class.php
@@ -3406,7 +3406,7 @@ class Ticket extends CommonITILObject {

     //$('#itilcategories_id').select2({
     $('#subsub').select2({
-    width: '230px',
+                          width: '330px',^M
                       closeOnSelect: false,
                       dropdownAutoWidth: false,
                       quietMillis: 100,
@@ -3495,7 +3495,7 @@ class Ticket extends CommonITILObject {
        }

         $('#sub').select2({
-                              width: '230px',
+                              width: '330px',^M
                           closeOnSelect: false,
                           dropdownAutoWidth: false,
                           quietMillis: 100,
  @@ -3512,7 +3512,7 @@ class Ticket extends CommonITILObject {

         //$('#subsub').select2({
         $('#itilcategories_id').select2({
-                              width: '230px',
+                              width: '330px',^M
                           closeOnSelect: false,
                           dropdownAutoWidth: false,
                           quietMillis: 100,
@@ -5077,7 +5077,7 @@ class Ticket extends CommonITILObject {

   echo "<div id='content$rand_text'>";
   if ($CFG_GLPI['use_rich_text'] || $canupdate) {
-         echo "<textarea id='$content_id' name='content' 
   style='width:100%' row                                                                                        
   s='$rows'>".
   +         echo "<textarea id='$content_id' name='content' style='width:90%' rows                                                                                        ='$rows'>".^M
            $this->fields["content"]."</textarea></div>";
      if (!$CFG_GLPI["use_rich_text"]) {
         echo Html::scriptBlock("$(document).ready(function() {   
 $('#$content                                                                                        _id').autogrow(); });");

I have several changes in the same file, which when I review the modified part I see that it has several HEADs

  $('#subsub').select2({
  <<<<<<< HEAD
  <<<<<<< HEAD
                      width: '200px',
   =======
                      width: '330px',
   >>>>>>> b0842b9... casos 3 resueltos 290, 291
   =======
                      width: '230px',

  

29026cd ... cases resolved 3 276,217,288,287,286                             closeOnSelect: false,                             dropdownAutoWidth: false,                             quietMillis: 100,                             minimumResultsForSearch: 50,

Does anyone know how I can choose only one change and that everything is in order ?, Thanks in advance.