Adding HEAD decorator markup in the Graph

src/Commands/QueryCommits.cs

@@ -146,6 +146,15 @@ namespace SourceGit.Commands
                         Name = d.Substring(19).Trim(),
                     });
                 }
+                else if (d.Equals("HEAD"))
+                {
+                    isHeadOfCurrent = true;
+                    decorators.Add(new Models.Decorator()
+                    {
+                        Type = Models.DecoratorType.CurrentCommitHead,
+                        Name = d.Trim(),
+                    });
+                }
                 else if (d.StartsWith("refs/heads/", StringComparison.Ordinal))
                 {
                     decorators.Add(new Models.Decorator()

src/Converters/DecoratorTypeConverters.cs

@@ -38,6 +38,9 @@ namespace SourceGit.Converters
             });
 
         public static readonly FuncValueConverter<Models.DecoratorType, FontWeight> ToFontWeight =
-            new FuncValueConverter<Models.DecoratorType, FontWeight>(v => v == Models.DecoratorType.CurrentBranchHead ? FontWeight.Bold : FontWeight.Regular);
+            new FuncValueConverter<Models.DecoratorType, FontWeight>(v => 
+                v is Models.DecoratorType.CurrentBranchHead or Models.DecoratorType.CurrentCommitHead 
+                    ? FontWeight.Bold : FontWeight.Regular
+            );
     }
 }

src/Models/Commit.cs

@@ -32,7 +32,7 @@ namespace SourceGit.Models
 
         public bool IsCurrentHead
         {
-            get => Decorators.Find(x => x.Type == DecoratorType.CurrentBranchHead) != null;
+            get => Decorators.Find(x => x.Type is DecoratorType.CurrentBranchHead or DecoratorType.CurrentCommitHead) != null;
         }
 
         public string FullMessage

src/Models/Decorator.cs

@@ -7,6 +7,7 @@ namespace SourceGit.Models
         None,
         CurrentBranchHead,
         LocalBranchHead,
+        CurrentCommitHead,
         RemoteBranchHead,
         Tag,
     }