@@ -200,6 +200,8 @@ two parameters.  The first parameter is the upstream from which
 the series was forked.  The second parameter is the branch being
 rebased, and is not set when rebasing the current branch.
 
+Hooks executed during 'pre-rebase' will run in parallel by default.
+
 post-checkout
 ~~~~~~~~~~~~~
 

@@ -28,6 +28,7 @@
 #include "sequencer.h"
 #include "rebase-interactive.h"
 #include "reset.h"
+#include "hook.h"
 
 #define DEFAULT_REFLOG_ACTION "rebase"
 

@@ -1312,6 +1313,7 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
 	char *squash_onto_name = NULL;
 	int reschedule_failed_exec = -1;
 	int allow_preemptive_ff = 1;
+	struct run_hooks_opt hook_opt = RUN_HOOKS_OPT_INIT_ASYNC;
 	struct option builtin_rebase_options[] = {
 		OPT_STRING(0, "onto", &options.onto_name,
 			   N_("revision"),

@@ -2024,9 +2026,9 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
 	}
 
 	/* If a hook exists, give it a chance to interrupt*/
+	strvec_pushl(&hook_opt.args, options.upstream_arg, argc ? argv[0] : NULL, NULL);
 	if (!ok_to_skip_pre_rebase &&
-	    run_hook_le(NULL, "pre-rebase", options.upstream_arg,
-			argc ? argv[0] : NULL, NULL))
+	    run_hooks("pre-rebase", &hook_opt))
 		die(_("The pre-rebase hook refused to rebase."));
 
 	if (options.flags & REBASE_DIFFSTAT) {

@@ -2106,6 +2108,7 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
 	ret = !!run_specific_rebase(&options, action);
 
 cleanup:
+	run_hooks_opt_clear(&hook_opt);
 	strbuf_release(&buf);
 	strbuf_release(&revisions);
 	free(options.head_name);