checkout: don't revert file on ambiguous tracking branches

index b52c490c8f..f832040e94 100644
@@ -1115,6 +1115,22 @@ static void setup_new_branch_info_and_source_tree(
 	}
 }
 
+static const char *parse_remote_branch(const char *arg,
+				       struct object_id *rev,
+				       int could_be_checkout_paths,
+				       int *dwim_remotes_matched)
+{
+	const char *remote = unique_tracking_name(arg, rev, dwim_remotes_matched);
+
+	if (remote && could_be_checkout_paths) {
+		die(_("'%s' could be both a local file and a tracking branch.\n"
+			"Please use -- (and optionally --no-guess) to disambiguate"),
+		    arg);
+	}
+
+	return remote;
+}
+
 static int parse_branchname_arg(int argc, const char **argv,
 				int dwim_new_local_branch_ok,
 				struct branch_info *new_branch_info,

@@ -1225,13 +1241,10 @@ static int parse_branchname_arg(int argc, const char **argv,
 			recover_with_dwim = 0;
 
 		if (recover_with_dwim) {
-			const char *remote = unique_tracking_name(arg, rev,
-								  dwim_remotes_matched);
+			const char *remote = parse_remote_branch(arg, rev,
+								 could_be_checkout_paths,
+								 dwim_remotes_matched);
 			if (remote) {
-				if (could_be_checkout_paths)
-					die(_("'%s' could be both a local file and a tracking branch.\n"
-					      "Please use -- (and optionally --no-guess) to disambiguate"),
-					    arg);
 				*new_branch = arg;
 				arg = remote;
 				/* DWIMmed to create local branch, case (3).(b) */

index f832040e94..5c41645c7d 100644
@@ -1117,10 +1117,10 @@ static void setup_new_branch_info_and_source_tree(
 
 static const char *parse_remote_branch(const char *arg,
 				       struct object_id *rev,
-				       int could_be_checkout_paths,
-				       int *dwim_remotes_matched)
+				       int could_be_checkout_paths)
 {
-	const char *remote = unique_tracking_name(arg, rev, dwim_remotes_matched);
+	int num_matches = 0;
+	const char *remote = unique_tracking_name(arg, rev, &num_matches);
 
 	if (remote && could_be_checkout_paths) {
 		die(_("'%s' could be both a local file and a tracking branch.\n"

@@ -1128,6 +1128,22 @@ static const char *parse_remote_branch(const char *arg,
 		    arg);
 	}
 
+	if (!remote && num_matches > 1) {
+	    if (advice_checkout_ambiguous_remote_branch_name) {
+		    advise(_("If you meant to check out a remote tracking branch on, e.g. 'origin',\n"
+			     "you can do so by fully qualifying the name with the --track option:\n"
+			     "\n"
+			     "    git checkout --track origin/<name>\n"
+			     "\n"
+			     "If you'd like to always have checkouts of an ambiguous <name> prefer\n"
+			     "one remote, e.g. the 'origin' remote, consider setting\n"
+			     "checkout.defaultRemote=origin in your config."));
+	    }
+
+	    die(_("'%s' matched multiple (%d) remote tracking branches"),
+		arg, num_matches);
+	}
+
 	return remote;
 }
 

@@ -1135,8 +1151,7 @@ static int parse_branchname_arg(int argc, const char **argv,
 				int dwim_new_local_branch_ok,
 				struct branch_info *new_branch_info,
 				struct checkout_opts *opts,
-				struct object_id *rev,
-				int *dwim_remotes_matched)
+				struct object_id *rev)
 {
 	const char **new_branch = &opts->new_branch;
 	int argcount = 0;

@@ -1242,8 +1257,7 @@ static int parse_branchname_arg(int argc, const char **argv,
 
 		if (recover_with_dwim) {
 			const char *remote = parse_remote_branch(arg, rev,
-								 could_be_checkout_paths,
-								 dwim_remotes_matched);
+								 could_be_checkout_paths);
 			if (remote) {
 				*new_branch = arg;
 				arg = remote;

@@ -1509,7 +1523,6 @@ static int checkout_main(int argc, const char **argv, const char *prefix,
 			 const char * const usagestr[])
 {
 	struct branch_info new_branch_info;
-	int dwim_remotes_matched = 0;
 	int parseopt_flags = 0;
 
 	memset(&new_branch_info, 0, sizeof(new_branch_info));

@@ -1617,8 +1630,7 @@ static int checkout_main(int argc, const char **argv, const char *prefix,
 			opts->track == BRANCH_TRACK_UNSPECIFIED &&
 			!opts->new_branch;
 		int n = parse_branchname_arg(argc, argv, dwim_ok,
-					     &new_branch_info, opts, &rev,
-					     &dwim_remotes_matched);
+					     &new_branch_info, opts, &rev);
 		argv += n;
 		argc -= n;
 	} else if (!opts->accept_ref && opts->from_treeish) {

@@ -1695,28 +1707,10 @@ static int checkout_main(int argc, const char **argv, const char *prefix,
 	}
 
 	UNLEAK(opts);
-	if (opts->patch_mode || opts->pathspec.nr) {
-		int ret = checkout_paths(opts, new_branch_info.name);
-		if (ret && dwim_remotes_matched > 1 &&
-		    advice_checkout_ambiguous_remote_branch_name)
-			advise(_("'%s' matched more than one remote tracking branch.\n"
-				 "We found %d remotes with a reference that matched. So we fell back\n"
-				 "on trying to resolve the argument as a path, but failed there too!\n"
-				 "\n"
-				 "If you meant to check out a remote tracking branch on, e.g. 'origin',\n"
-				 "you can do so by fully qualifying the name with the --track option:\n"
-				 "\n"
-				 "    git checkout --track origin/<name>\n"
-				 "\n"
-				 "If you'd like to always have checkouts of an ambiguous <name> prefer\n"
-				 "one remote, e.g. the 'origin' remote, consider setting\n"
-				 "checkout.defaultRemote=origin in your config."),
-			       argv[0],
-			       dwim_remotes_matched);
-		return ret;
-	} else {
+	if (opts->patch_mode || opts->pathspec.nr)
+		return checkout_paths(opts, new_branch_info.name);
+	else
 		return checkout_branch(opts, &new_branch_info);
-	}
 }
 
 int cmd_checkout(int argc, const char **argv, const char *prefix)