diff --git a/src/NerdBank.GitVersioning/ManagedGit/GitRepository.cs b/src/NerdBank.GitVersioning/ManagedGit/GitRepository.cs
index cf88b0d7..1758ae45 100644
--- a/src/NerdBank.GitVersioning/ManagedGit/GitRepository.cs
+++ b/src/NerdBank.GitVersioning/ManagedGit/GitRepository.cs
@@ -325,7 +325,7 @@ public GitCommit GetCommit(GitObjectId sha, bool readAuthor = false)
             if (objectish.StartsWith("refs/", StringComparison.Ordinal))
             {
                 // Match on loose ref files by their canonical name.
-                possibleLooseFileMatches.Add(Path.Combine(this.GitDirectory, objectish));
+                possibleLooseFileMatches.Add(Path.Combine(this.CommonDirectory, objectish));
                 skipObjectIdLookup = true;
             }
             else