make install bug?

Using the latest git on "make prefix=/home/eschvoca/apps/git-0.99.9m
install" I get the following error:

make[1]: Entering directory `/home/eschvoca/downloads/git-0.99.9m/templates'
: no custom templates yet
install -d -m755 '/home/eschvoca/share/git-core/templates/'
(cd blt && tar cf - .) | \
(cd '/home/eschvoca/share/git-core/templates/' && tar xf -)
tar: This does not look like a tar archive
tar: Skipping to next header
tar: Error exit delayed from previous errors
make[1]: *** [install] Error 2


I can fix the problem by changing templates/Makefile to the following:

install: all
    $(INSTALL) -d -m755 $(call shellquote,$(DESTDIR)$(template_dir))
    (cd blt && $(TAR) cf - . > /tmp/a.tar) | \
    (cd $(call shellquote,$(DESTDIR)$(template_dir)) && $(TAR) xf /tmp/a.tar)