Заранее извиняюсь, что возможно не туда пишу, но компонента branding-simply-linux-release не существует.

Для пакета branding-simply-linux-release-6.0.1-alt8.M60P.1 нужно добавить конфликты во избежание такой ситуации:
[aik@build-linux ~]$ i586 hsh --apt-config=altlinux.apt.conf --initroot-only --pkg-build-list=+branding-altlinux-centaurus-release
<13>Jan 22 16:00:27 rpmi: setup-2.2.14-alt1 installed
<13>Jan 22 16:00:27 rpmi: filesystem-2.3.8-alt1 installed
<13>Jan 22 16:00:27 rpmi: glibc-preinstall-6:2.11.3-alt8.M60P.4 installed
<13>Jan 22 16:00:27 rpmi: glibc-core-6:2.11.3-alt8.M60P.4 installed
<13>Jan 22 16:00:27 rpmi: libattr-2.4.46-alt1 installed
<13>Jan 22 16:00:27 rpmi: sh-3.2.54-alt0.M60P.1 installed
<13>Jan 22 16:00:27 rpmi: libpopt-1:1.14-alt6 installed
<13>Jan 22 16:00:27 rpmi: libselinux-2.0.98-alt2 installed
<13>Jan 22 16:00:27 rpmi: libacl-2.2.51-alt1 installed
<13>Jan 22 16:00:27 rpmi: libcap-1:2.16-alt4 installed
<13>Jan 22 16:00:27 rpmi: bzlib-1:1.0.6-alt3 installed
<13>Jan 22 16:00:27 rpmi: libgmp-4.3.2-alt3 installed
<13>Jan 22 16:00:27 rpmi: libgcc1-4.5.4-alt1.M60P.1 installed
<13>Jan 22 16:00:27 rpmi: glibc-pthread-6:2.11.3-alt8.M60P.4 installed
<13>Jan 22 16:00:27 rpmi: libbeecrypt7-4.2.1-alt7 installed
<13>Jan 22 16:00:27 rpmi: libdb4.7-4.7.25-alt7 installed
<13>Jan 22 16:00:27 rpmi: getopt-2.19.1-alt2 installed
<13>Jan 22 16:00:27 rpmi: libelf-0.152-alt1 installed
<13>Jan 22 16:00:27 rpmi: liblzma-5.0.1-alt1 installed
<13>Jan 22 16:00:27 rpmi: zlib-1.2.5-alt3 installed
<13>Jan 22 16:00:27 rpmi: librpm-4.0.4-alt100.24.M60P.5 installed
<13>Jan 22 16:00:27 rpmi: librpmbuild-4.0.4-alt100.24.M60P.5 installed
<13>Jan 22 16:00:27 rpmi: terminfo-5.7-alt6 installed
<13>Jan 22 16:00:28 rpmi: libtinfo-5.7-alt6 installed
<13>Jan 22 16:00:28 rpmi: coreutils-8.15-alt1 installed
<13>Jan 22 16:00:28 rpmi: alt-gpgkeys-0.7.60-alt1 installed
<13>Jan 22 16:00:28 rpmi: fakeroot-1.12.2-alt1 installed
<13>Jan 22 16:00:28 rpmi: rpm-4.0.4-alt100.24.M60P.5 installed
file /etc/altlinux-release conflicts between attempted installs of branding-altlinux-centaurus-release-6.0.0-alt18 and branding-simply-linux-release-6.0.1-alt8.M60P.1
hsh-initroot: Failed to install build package list.

Сделал по аналогии с p7 - см. branding.spec.diff.

Собрал src.rpm, из src.rpm собрал уже branding-altlinux-centaurus-release-6.0.0-alt18.noarch.rpm. Проверил, что хешерница инициализируется как надо
[aik@build-linux ~]$ i586 hsh --apt-config=hasher.apt.conf --initroot-only --pkg-build-list=+branding-altlinux-centaurus-release
[aik@build-linux ~]$ hsh-shell --rooter
[root@localhost .in]# cat /etc/altlinux-release 
ALT Linux 6.0.0 Centaurus  (Cheiron)

Поправьте, пожалуйста.