Merge branch 'jc/fetch-progressive-stride'

* jc/fetch-progressive-stride:
Fix potential local deadlock during fetch-pack

diff --cc builtin/fetch-pack.c
index 65a8727453320f68e1230f702392c5ca3bb76884,147d67dca447aa4afa1c829865af636753cacf31..85aff029b225c023f09fda635f16cc00a22ed7ca
--- 1/builtin/fetch-pack.c
--- 2/builtin/fetch-pack.c
+++ b/builtin/fetch-pack.c
@@@ -219,17 -218,8 +219,18 @@@ static void send_request(int fd, struc
                safe_write(fd, buf->buf, buf->len);
  }
  
 +static void insert_one_alternate_ref(const struct ref *ref, void *unused)
 +{
 +      rev_list_insert_ref(NULL, ref->old_sha1, 0, NULL);
 +}
 +
 +static void insert_alternate_refs(void)
 +{
 +      foreach_alt_odb(refs_from_alternate_cb, insert_one_alternate_ref);
 +}
 +
  #define INITIAL_FLUSH 16
+ #define PIPESAFE_FLUSH 32
  #define LARGE_FLUSH 1024
  
  static int next_flush(int count)