Teach fast-import how to clear the internal branch content.

diff --git a/commit.h b/commit.h
index fc13de9780f98c3bd9f330ef6177fd47a4da3d80..491b0c4aac8f9690dc836a88ceda8e642c97be70 100644 (file)
--- a/commit.h
+++ b/commit.h
@@ -97,7 +97,7 @@ void sort_in_topological_order_fn(struct commit_list ** list, int lifo,
 
 struct commit_graft {
        unsigned char sha1[20];
-       int nr_parent;
+       int nr_parent; /* < 0 if shallow commit */
        unsigned char parent[FLEX_ARRAY][20]; /* more */
 };
 
@@ -107,4 +107,12 @@ int read_graft_file(const char *graft_file);
 
 extern struct commit_list *get_merge_bases(struct commit *rev1, struct commit *rev2, int cleanup);
 
+extern int register_shallow(const unsigned char *sha1);
+extern int unregister_shallow(const unsigned char *sha1);
+extern int write_shallow_commits(int fd, int use_pack_protocol);
+extern int is_repository_shallow(void);
+extern struct commit_list *get_shallow_commits(struct object_array *heads,
+               int depth, int shallow_flag, int not_shallow_flag);
+
+int in_merge_bases(struct commit *rev1, struct commit *rev2);
 #endif /* COMMIT_H */