diff --git a/refs/debug.c b/refs/debug.c
index 58fb4557ed..27aae42134 100644
--- a/refs/debug.c
+++ b/refs/debug.c

@@ -33,6 +33,12 @@ struct ref_store *maybe_debug_wrap_ref_store(const char *gitdir, struct ref_stor
 	return (struct ref_store *)res;
 }

+static void debug_release(struct ref_store *refs)
+{
+	struct debug_ref_store *drefs = (struct debug_ref_store *)refs;

+	drefs->refs->be->release(drefs->refs);
+}
+
 static int debug_create(struct ref_store *refs, int flags, struct strbuf *err)
 {
 	struct debug_ref_store *drefs = (struct debug_ref_store *)refs;

@@ -427,6 +433,7 @@ static int debug_reflog_expire(struct ref_store *ref_store, const char *refname,
 struct ref_storage_be refs_be_debug = {
 	.name = "debug",
 	.init = NULL,
+	.release = debug_release,
 	.create = debug_create,

 	/*

diff --git a/refs/files-backend.c b/refs/files-backend.c
index f766d18d5a..368df075c1 100644
--- a/refs/files-backend.c
+++ b/refs/files-backend.c

@@ -149,6 +149,14 @@ static struct files_ref_store *files_downcast(struct ref_store *ref_store,
 	return refs;
 }

+static void files_ref_store_release(struct ref_store *ref_store)
+{
+	struct files_ref_store *refs = files_downcast(ref_store, 0, "release");
+	free_ref_cache(refs->loose);
+	free(refs->gitcommondir);
+	ref_store_release(refs->packed_ref_store);
+}
+
 static void files_reflog_path(struct files_ref_store *refs,
 			      struct strbuf *sb,
 			      const char *refname)

@@ -3284,6 +3292,7 @@ static int files_ref_store_create(struct ref_store *ref_store,
 struct ref_storage_be refs_be_files = {
 	.name = "files",
 	.init = files_ref_store_init,
+	.release = files_ref_store_release,
 	.create = files_ref_store_create,
 	.transaction_prepare = files_transaction_prepare,
 	.transaction_finish = files_transaction_finish,

diff --git a/refs/packed-backend.c b/refs/packed-backend.c
index 716513efed..bebceb4aa7 100644
--- a/refs/packed-backend.c
+++ b/refs/packed-backend.c

@@ -252,6 +252,15 @@ static void clear_snapshot(struct packed_ref_store *refs)
 	}
 }

+static void packed_ref_store_release(struct ref_store *ref_store)
+{
+	struct packed_ref_store *refs = packed_downcast(ref_store, 0, "release");
+	clear_snapshot(refs);
+	rollback_lock_file(&refs->lock);
+	delete_tempfile(&refs->tempfile);
+	free(refs->path);
+}

 static NORETURN void die_unterminated_line(const char *path,
 					   const char *p, size_t len)
 {

@@ -1707,6 +1716,7 @@ static struct ref_iterator *packed_reflog_iterator_begin(struct ref_store *ref_s
 struct ref_storage_be refs_be_packed = {
 	.name = "packed",
 	.init = packed_ref_store_init,
+	.release = packed_ref_store_release,
 	.create = packed_ref_store_create,
 	.transaction_prepare = packed_transaction_prepare,
 	.transaction_finish = packed_transaction_finish,

diff --git a/refs/refs-internal.h b/refs/refs-internal.h
index eb42212764..cc1fe6e633 100644
--- a/refs/refs-internal.h
+++ b/refs/refs-internal.h

@@ -530,6 +530,11 @@ typedef struct ref_store *ref_store_init_fn(struct repository *repo,
 					    const char *gitdir,
 					    unsigned int flags);

+/*
+ * Release all memory and resources associated with the ref store.
+ */
+typedef void ref_store_release_fn(struct ref_store *refs);
+
 typedef int ref_store_create_fn(struct ref_store *refs,
 				int flags,
 				struct strbuf *err);

@@ -668,6 +673,7 @@ typedef int read_symbolic_ref_fn(struct ref_store *ref_store, const char *refnam
 struct ref_storage_be {
 	const char *name;
 	ref_store_init_fn *init;
+	ref_store_release_fn *release;
 	ref_store_create_fn *create;

 	ref_transaction_prepare_fn *transaction_prepare;

diff --git a/refs/reftable-backend.c b/refs/reftable-backend.c
index a4bb71cd76..6c262c2193 100644
--- a/refs/reftable-backend.c
+++ b/refs/reftable-backend.c

@@ -293,6 +293,27 @@ static struct ref_store *reftable_be_init(struct repository *repo,
 	return &refs->base;
 }

+static void reftable_be_release(struct ref_store *ref_store)
+{
+	struct reftable_ref_store *refs = reftable_be_downcast(ref_store, 0, "release");
+	struct strmap_entry *entry;
+	struct hashmap_iter iter;
+
+	if (refs->main_stack) {
+		reftable_stack_destroy(refs->main_stack);
+		refs->main_stack = NULL;
+	}
+
+	if (refs->worktree_stack) {
+		reftable_stack_destroy(refs->worktree_stack);
+		refs->main_stack = NULL;

+	}
+
+	strmap_for_each_entry(&refs->worktree_stacks, &iter, entry)
+		reftable_stack_destroy(entry->value);
+	strmap_clear(&refs->worktree_stacks, 0);
+}
+
 static int reftable_be_create(struct ref_store *ref_store,
 			      int flags UNUSED,
 			      struct strbuf *err UNUSED)

@@ -2248,6 +2269,7 @@ static int reftable_be_reflog_expire(struct ref_store *ref_store,
 struct ref_storage_be refs_be_reftable = {
 	.name = "reftable",
 	.init = reftable_be_init,
+	.release = reftable_be_release,
 	.create = reftable_be_create,
 	.transaction_prepare = reftable_be_transaction_prepare,
 	.transaction_finish = reftable_be_transaction_finish,
--

2.45.1.190.g19fe900cfc.dirty