diff --git a/sha1-name.c b/sha1-name.c
index 2643b75b54..af8bf5b351 100644
--- a/sha1-name.c
+++ b/sha1-name.c
@@ -771,7 +771,7 @@ static inline int push_mark(const char *string, int len)
 }
 
 static enum get_oid_result get_oid_1(const char *name, int len, struct object_id *oid, unsigned lookup_flags);
-static int interpret_nth_prior_checkout(const char *name, int namelen, struct strbuf *buf);
+static int interpret_nth_prior_checkout(struct repository *r, const char *name, int namelen, struct strbuf *buf);
 
 static int get_oid_basic(const char *str, int len, struct object_id *oid,
 			  unsigned int flags)
@@ -835,7 +835,7 @@ static int get_oid_basic(const char *str, int len, struct object_id *oid,
 		struct strbuf buf = STRBUF_INIT;
 		int detached;
 
-		if (interpret_nth_prior_checkout(str, len, &buf) > 0) {
+		if (interpret_nth_prior_checkout(the_repository, str, len, &buf) > 0) {
 			detached = (buf.len == the_hash_algo->hexsz && !get_oid_hex(buf.buf, oid));
 			strbuf_release(&buf);
 			if (detached)
@@ -1288,7 +1288,8 @@ static int grab_nth_branch_switch(struct object_id *ooid, struct object_id *noid
  * Parse @{-N} syntax, return the number of characters parsed
  * if successful; otherwise signal an error with negative value.
  */
-static int interpret_nth_prior_checkout(const char *name, int namelen,
+static int interpret_nth_prior_checkout(struct repository *r,
+					const char *name, int namelen,
 					struct strbuf *buf)
 {
 	long nth;
@@ -1312,12 +1313,14 @@ static int interpret_nth_prior_checkout(const char *name, int namelen,
 	cb.remaining = nth;
 	strbuf_init(&cb.buf, 20);
 
-	retval = 0;
-	if (0 < for_each_reflog_ent_reverse("HEAD", grab_nth_branch_switch, &cb)) {
+	retval = refs_for_each_reflog_ent_reverse(get_main_ref_store(r),
+			"HEAD", grab_nth_branch_switch, &cb);
+	if (0 < retval) {
 		strbuf_reset(buf);
 		strbuf_addbuf(buf, &cb.buf);
 		retval = brace - name + 1;
-	}
+	} else
+		retval = 0;
 
 	strbuf_release(&cb.buf);
 	return retval;
@@ -1484,7 +1487,7 @@ int repo_interpret_branch_name(struct repository *r,
 		namelen = strlen(name);
 
 	if (!allowed || (allowed & INTERPRET_BRANCH_LOCAL)) {
-		len = interpret_nth_prior_checkout(name, namelen, buf);
+		len = interpret_nth_prior_checkout(the_repository, name, namelen, buf);
 		if (!len) {
 			return len; /* syntax Ok, not enough switches */
 		} else if (len > 0) {