git: update to v2.47.0

Update to git version v2.47.0, this requires changes for these
upstream commits:

* e8207717f1623325fe1c95338fb03c1104ed5687
  refs: add referent to each_ref_fn

Signed-off-by: Christian Hesse <mail@eworm.de>

1 file changed, 2 insertions, 2 deletions

diff --git a/cgit.c b/cgit.c
index 2efa962..65c38c0 100644
--- a/cgit.c
+++ b/cgit.c
@@ -448,8 +448,8 @@ struct refmatch {
 	int match;
 };
 
-static int find_current_ref(const char *refname, const struct object_id *oid,
-			    int flags, void *cb_data)
+static int find_current_ref(const char *refname, const char *referent UNUSED,
+                            const struct object_id *oid, int flags, void *cb_data)
 {
 	struct refmatch *info;