claudio noticed that at least 'git checkout' still spawns a lot of
threads; does this seem more reasonable?

Index: Makefile
===================================================================
RCS file: /cvs/ports/devel/git/Makefile,v
diff -u -p -r1.287 Makefile
--- Makefile	19 May 2025 14:23:44 -0000	1.287
+++ Makefile	4 Jun 2025 11:51:02 -0000
@@ -3,7 +3,7 @@ COMMENT-svn =	subversion interoperabilit
 COMMENT-x11 =	graphical tools
 
 V =		2.49.0
-REVISION =	1
+REVISION =	2
 DISTNAME =	git-${V}
 CATEGORIES =	devel
 
Index: patches/patch-preload-index_c
===================================================================
RCS file: patches/patch-preload-index_c
diff -N patches/patch-preload-index_c
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ patches/patch-preload-index_c	4 Jun 2025 11:51:02 -0000
@@ -0,0 +1,12 @@
+Index: preload-index.c
+--- preload-index.c.orig
++++ preload-index.c
+@@ -124,6 +124,8 @@ void preload_index(struct index_state *index,
+ 	trace2_region_enter("index", "preload", NULL);
+ 
+ 	trace_performance_enter();
++	if (threads > online_cpus())
++		threads = online_cpus();
+ 	if (threads > MAX_PARALLEL)
+ 		threads = MAX_PARALLEL;
+ 	offset = 0;