Merge branch 'tc/clone-single-revision'

"git clone" learned to make a shallow clone for a single commit
that is not necessarily be at the tip of any branch.

* tc/clone-single-revision:
  builtin/clone: teach git-clone(1) the --revision= option
  parse-options: introduce die_for_incompatible_opt2()
  clone: introduce struct clone_opts in builtin/clone.c
  clone: add tags refspec earlier to fetch refspec
  clone: refactor wanted_peer_refs()
  clone: make it possible to specify --tags
  clone: cut down on global variables in clone.c

1 files changed, 5 insertions, 0 deletions

diff --git a/remote.h b/remote.h
index 51402b95e4..6be5031f64 100644
--- a/remote.h
+++ b/remote.h
@@ -221,6 +221,11 @@ struct ref *alloc_ref(const char *name);
 struct ref *copy_ref(const struct ref *ref);
 struct ref *copy_ref_list(const struct ref *ref);
 int count_refspec_match(const char *, struct ref *refs, struct ref **matched_ref);
+/*
+ * Put a ref in the tail and prepare tail for adding another one.
+ * *tail is the pointer to the tail of the list of refs.
+ */
+void tail_link_ref(struct ref *ref, struct ref ***tail);
 
 int check_ref_type(const struct ref *ref, int flags);