Merge branch 'cb/maint-orphan-merge-noclobber'

* cb/maint-orphan-merge-noclobber:
  do not overwrite untracked during merge from unborn branch

1 files changed, 19 insertions, 1 deletions

diff --git a/builtin/merge.c b/builtin/merge.c
index 9ec13f14b..c24a7be02 100644
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -234,6 +234,24 @@ static void save_state(void)
 		die("not a valid object: %s", buffer.buf);
 }
 
+static void read_empty(unsigned const char *sha1, int verbose)
+{
+	int i = 0;
+	const char *args[7];
+
+	args[i++] = "read-tree";
+	if (verbose)
+		args[i++] = "-v";
+	args[i++] = "-m";
+	args[i++] = "-u";
+	args[i++] = EMPTY_TREE_SHA1_HEX;
+	args[i++] = sha1_to_hex(sha1);
+	args[i] = NULL;
+
+	if (run_command_v_opt(args, RUN_GIT_CMD))
+		die("read-tree failed");
+}
+
 static void reset_hard(unsigned const char *sha1, int verbose)
 {
 	int i = 0;
@@ -985,7 +1003,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 			die("%s - not something we can merge", argv[0]);
 		update_ref("initial pull", "HEAD", remote_head->sha1, NULL, 0,
 				DIE_ON_ERR);
-		reset_hard(remote_head->sha1, 0);
+		read_empty(remote_head->sha1, 0);
 		return 0;
 	} else {
 		struct strbuf merge_names = STRBUF_INIT;