@@ -213,8 +213,12 @@
 	return file != nil, nil
 }
 
-func (g *Repo) FileContent(path string) (string, error) {
-	c, err := g.r.CommitObject(g.h)
+func (g *Repo) FileContent(path string, ref string) (string, error) {
+	hash, err := g.r.ResolveRevision(plumbing.Revision(ref))
+	if err != nil {
+		return "", fmt.Errorf("resolving rev %s for %s: %w", ref, path, err)
+	}
+	c, err := g.r.CommitObject(*hash)
 	if err != nil {
 		return "", fmt.Errorf("commit object: %w", err)
 	}

@@ -4,12 +4,17 @@ import (
 	"fmt"
 	"strings"
 
+	"github.com/go-git/go-git/v5/plumbing"
 	"github.com/go-git/go-git/v5/plumbing/object"
 )
 
-func (g *Repo) FileTree(path string) ([]NiceTree, error) {
+func (g *Repo) FileTree(path string, ref string) ([]NiceTree, error) {
+	hash, err := g.r.ResolveRevision(plumbing.Revision(ref))
+	if err != nil {
+		return nil, fmt.Errorf("resolving rev %s for %s: %w", ref, path, err)
+	}
 	path = strings.TrimSuffix(path, "/")
-	c, err := g.r.CommitObject(g.h)
+	c, err := g.r.CommitObject(*hash)
 	if err != nil {
 		return nil, fmt.Errorf("commit object: %w", err)
 	}

@@ -66,7 +66,7 @@ if !found {
 		return d.NotFound(rc)
 	}
 
-	files, err := gr.FileTree(treePath)
+	files, err := gr.FileTree(treePath, ref)
 	if err != nil {
 		return err
 	}
@@ -99,7 +99,7 @@ if !found {
 		return d.NotFound(rc)
 	}
 
-	contents, err := gr.FileContent(treePath)
+	contents, err := gr.FileContent(treePath, ref)
 	if err != nil {
 		return err
 	}

@@ -103,7 +103,7 @@ }
 
 				for _, readme := range d.c.Repo.Readme {
 					ext := filepath.Ext(readme)
-					content, _ := r.FileContent(readme)
+					content, _ := r.FileContent(readme, r.MainBranch)
 					if len(content) > 0 {
 						switch ext {
 						case ".md", ".mkd", ".markdown":