Some old Git branches are hidden. If you want to fetch them, add the following section into the .git/config file of your lfs.git clone:

[remote "old"]
        url = https://git.linuxfromscratch.org/lfs.git
        fetch = +refs/old/heads/*:refs/remotes/old/*

Then run git fetch old.

These branches are:

6.1-pre1
6.1-pre2
6.1-testrelease
6.1.1-pre1
6.1.1-pre2
6.1.1-rc1
6.1.1@7197
6.2-new
6.2-pre1
6.2-pre2
6.2-pre3
6.3-8326
6.3-rc1
6.3-rc2
6.5-rc1
6.5-rc2
6.6-rc1
6.6-rc2
6.7-rc1
6.8-rc1
7.0-rc1
7.0-rc2
7.1-rc1
7.10
7.10-rc1
7.2-rc1
7.3-rc1
7.4-rc1
7.4-rc2
7.5-SYSTEMD-rc1
7.5-rc1
7.5-systemd-rc1
7.6-rc1
7.6-systemd-rc1
7.6-systemd-rc2
7.7-rc1
7.7-systemd-rc1
7.8-rc1
7.9-rc1
7.9-rc2
7.9-systemd-rc1
7.9-systemd-rc2
8.0-rc1
8.1-rc1
8.1-rc2
8.2-rc1
8.3-rc1
8.3-rc2
8.4-rc1
9.0-rc1
9.1-rc1
BOOK.old
LFS-RNG
LFS7POC
alphabetical
b5_0
b5_1
branch_point_5_1
branch_point_6_0
cross-chap5
gcc4
hybrid
jh
lfs-6.2-pre3
mod_xslt_branch
multi-arch
multilib-before-cross
nosym
old-trunk
oldtestingasof20050219
oldtrunkasof20050219
oldxml_b_5_1
oldxml_bp_5_1
systemd
test
udev_update
v3_0-rc1
v3_2-rc1
v3_2-rc2
v4_0rc1
v5_0-pre1
v5_0-pre2
v5_0-pre3
v5_1-pre2
x86_64-POC
gcc-4.0