Attempted fix for #1657 (#1774)

- use app_id rather than memory address
- don't mix contexts and checks

Co-authored-by: Keegan Campbell <me@kfcampbell.com>

github/resource_github_branch_protection_v3_utils.go

@@ -53,14 +53,16 @@ func flattenAndSetRequiredStatusChecks(d *schema.ResourceData, protection *githu
 		for _, c := range rsc.Contexts {
 			// Parse into contexts
 			contexts = append(contexts, c)
-			checks = append(contexts, c)
 		}
 
 		// Flatten checks
 		for _, chk := range rsc.Checks {
-			// Parse into contexts
-			contexts = append(contexts, chk.Context)
-			checks = append(contexts, fmt.Sprintf("%s:%d", chk.Context, chk.AppID))
+			// Parse into checks
+			if chk.AppID != nil {
+				checks = append(checks, fmt.Sprintf("%s:%d", chk.Context, *chk.AppID))
+			} else {
+				checks = append(checks, chk.Context)
+			}
 		}
 
 		return d.Set("required_status_checks", []interface{}{