https://github.com/glandium/git-cinnabar/commit/2db9fad6a3df

--- helper/GIT-VERSION.mk.orig	2020-11-12 02:19:34 UTC
+++ helper/GIT-VERSION.mk
@@ -1,2 +1,2 @@
-GIT_VERSION ?= v2.29.2
+GIT_VERSION ?= v2.30.0
 WINDOWS_GIT_VERSION ?= $(GIT_VERSION).windows.1
--- helper/cinnabar-fast-import.c.orig	2020-11-12 02:19:34 UTC
+++ helper/cinnabar-fast-import.c
@@ -264,7 +264,7 @@ static uintmax_t parse_mark_ref(const char *p, char **
 		e->pack_id = MAX_PACK_ID;
 		e->idx.offset = 1;
 	}
-	insert_mark(marks, 2, e);
+	insert_mark(&marks, 2, e);
 	return 2;
 }
 
--- helper/cinnabar-helper.c.orig	2020-11-12 02:19:34 UTC
+++ helper/cinnabar-helper.c
@@ -1978,8 +1978,8 @@ static void do_upgrade(struct string_list *args)
 				free_tree_buffer(get_commit_tree(manifest_commit));
 			}
 		}
-		hashmap_free_entries(&track.commit_cache, struct oid_map_entry, ent);
-		hashmap_free_entries(&track.tree_cache, struct oid_map_entry, ent);
+		hashmap_clear_and_free(&track.commit_cache, struct oid_map_entry, ent);
+		hashmap_clear_and_free(&track.tree_cache, struct oid_map_entry, ent);
 		oidset_clear(&track.manifests);
 		stop_progress(&track.progress);
 	}
@@ -2371,7 +2371,7 @@ static void do_reload(struct string_list *args)
 
 	oidset_clear(&hg2git_seen);
 
-	hashmap_free_entries(&git_tree_cache, struct oid_map_entry, ent);
+	hashmap_clear_and_free(&git_tree_cache, struct oid_map_entry, ent);
 	hashmap_init(&git_tree_cache, oid_map_entry_cmp, NULL, 0);
 
 	oid_array_clear(&manifest_heads);
@@ -2574,6 +2574,6 @@ int main(int argc, const char *argv[])
 		free_notes(&files_meta);
 
 	oidset_clear(&hg2git_seen);
-	hashmap_free_entries(&git_tree_cache, struct oid_map_entry, ent);
+	hashmap_clear_and_free(&git_tree_cache, struct oid_map_entry, ent);
 	return 0;
 }