fix bug

Author: rklaehn

src/store/gc.rs

@@ -294,7 +294,7 @@ mod tests {
         store.tags().set("fg", *fghs.hash_and_format()).await?;
         drop(fghs);
         drop(bt);
-        store.tags().delete(ht.name).await?;
+        store.tags().delete("h").await?;
         let mut live = HashSet::new();
         gc_run_once(store, &mut live).await?;
         // a is protected because we keep the temp tag