Merge branch 'jt/lazy-fetch'

Updates to on-demand fetching code in lazily cloned repositories.

* jt/lazy-fetch:
  fetch: no FETCH_HEAD display if --no-write-fetch-head
  fetch-pack: remove no_dependents code
  promisor-remote: lazy-fetch objects in subprocess
  fetch-pack: do not lazy-fetch during ref iteration
  fetch: only populate existing_refs if needed
  fetch: avoid reading submodule config until needed
  fetch: allow refspecs specified through stdin
  negotiator/noop: add noop fetch negotiator

diff --cc Makefile
Simple merge

diff --cc builtin/fetch.c
Simple merge

diff --cc fetch-pack.c
Simple merge

diff --cc fetch-pack.h
index 5e747daea8976e942c046b9bd4a9eeb09102c21b,bbe29380595547315465a162b0e4e0737a59ade5..736a3dae467ac08a402e6b45e305bab0e7911a37
--- 1/fetch-pack.h
--- 2/fetch-pack.h
+++ b/fetch-pack.h
@@@ -40,30 -40,8 +40,16 @@@ struct fetch_pack_args 
        unsigned cloning:1;
        unsigned update_shallow:1;
        unsigned deepen:1;
 +
 +      /*
 +       * Indicate that the remote of this request is a promisor remote. The
 +       * pack received does not need all referred-to objects to be present in
 +       * the local object store, and fetch-pack will store the pack received
 +       * together with a ".promisor" file indicating that the aforementioned
 +       * pack is a promisor pack.
 +       */
        unsigned from_promisor:1;
  
-       /*
-        * Attempt to fetch only the wanted objects, and not any objects
-        * referred to by them. Due to protocol limitations, extraneous
-        * objects may still be included. (When fetching non-blob
-        * objects, only blobs are excluded; when fetching a blob, the
-        * blob itself will still be sent. The client does not need to
-        * know whether a wanted object is a blob or not.)
-        *
-        * If 1, fetch_pack() will also not modify any object flags.
-        * This allows fetch_pack() to safely be called by any function,
-        * regardless of which object flags it uses (if any).
-        */
-       unsigned no_dependents:1;
- 
        /*
         * Because fetch_pack() overwrites the shallow file upon a
         * successful deepening non-clone fetch, if this struct

diff --cc remote-curl.c
index 0c1833dcb68e15876af63868f2af104df36e0d39,ce470f27b96c220f896cdc11f0edc84a7c27ebbe..32cc4a0c553b3e6f953be247bd593e07222dd5b5
--- 1/remote-curl.c
--- 2/remote-curl.c
+++ b/remote-curl.c
@@@ -39,11 -39,7 +39,10 @@@ struct options 
                /* One of the SEND_PACK_PUSH_CERT_* constants. */
                push_cert : 2,
                deepen_relative : 1,
 +
 +              /* see documentation of corresponding flag in fetch-pack.h */
                from_promisor : 1,
-               no_dependents : 1,
 +
                atomic : 1,
                object_format : 1;
        const struct git_hash_algo *hash_algo;

diff --cc t/t5616-partial-clone.sh
Simple merge

diff --cc transport.c
Simple merge

diff --cc transport.h
index 298d9eedc9d0273fbc53419cafbc73182a9c934f,fe5a0a6662620a0af58ce683fe3cf207df54b380..ca409ea1e407c1c67e70e764e734946f7e22372e
--- 1/transport.h
--- 2/transport.h
+++ b/transport.h
@@@ -15,12 -15,8 +15,10 @@@ struct git_transport_options 
        unsigned self_contained_and_connected : 1;
        unsigned update_shallow : 1;
        unsigned deepen_relative : 1;
 +
 +      /* see documentation of corresponding flag in fetch-pack.h */
        unsigned from_promisor : 1;
  
-       unsigned no_dependents : 1;
- 
        /*
         * If this transport supports connect or stateless-connect,
         * the corresponding field in struct fetch_pack_args is copied