Installation failure on WSL v1 caused by "error: bad signature ... index file corrupt"

[HouzuoGuo]

Describe the problem you are having and how to reproduce it. Include any other additional context that can help us troubleshoot.

Environment report

~ $ fish --version
fish, version 3.1.0

~ $ cat /etc/os-release
NAME="Ubuntu"
VERSION="20.04.4 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.4 LTS"
VERSION_ID="20.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=focal
UBUNTU_CODENAME=focal

~ $ uname -a
Linux hzgl-alienware-202109 4.4.0-22000-Microsoft #653-Microsoft Wed Apr 27 16:06:00 PST 2022 x86_64 x86_64 x86_64 GNU/Linux

~ $ git --version
git version 2.25.1

# ~/.gitconfig does not exist

Since about a week ago, the installer constantly fails to clone the packages-main repository:

~ $ rm -rf ~/.local/share/omf/
~ $ wget -O /tmp/omf-install https://raw.githubusercontent.com/oh-my-fish/oh-my-fish/master/bin/install
--2022-06-06 10:36:24--  https://raw.githubusercontent.com/oh-my-fish/oh-my-fish/master/bin/install
Resolving raw.githubusercontent.com (raw.githubusercontent.com)... 185.199.111.133, 185.199.110.133, 185.199.108.133, ...
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|185.199.111.133|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 19035 (19K) [text/plain]
Saving to: ‘/tmp/omf-install’

/tmp/omf-install                              100%[===============================================================================================>]  18.59K  --.-KB/s    in 0.002s

2022-06-06 10:36:24 (8.96 MB/s) - ‘/tmp/omf-install’ saved [19035/19035]

~ $ fish /tmp/omf-install --noninteractive --verbose
source: Error encountered while sourcing file “/home/howard/.local/share/omf/init.fish”:
source: No such file or directory
DEBUG: verbose turned on
Checking for a sane environment...
DEBUG: Command 'awk' is /usr/bin/gawk
DEBUG: Command 'basename' is /usr/bin/basename
DEBUG: Command 'cp' is /usr/bin/cp
DEBUG: Command 'cut' is /usr/bin/cut
DEBUG: Command 'date' is /usr/bin/date
DEBUG: Command 'dirname' is /usr/bin/dirname
DEBUG: Command 'env' is /usr/bin/env
DEBUG: Command 'fish' is /usr/bin/fish
DEBUG: Command 'fold' is /usr/bin/fold
DEBUG: Command 'head' is /usr/bin/head
DEBUG: Command 'mkdir' is /usr/bin/mkdir
DEBUG: Command 'mv' is /usr/bin/mv
DEBUG: Command 'readlink' is /usr/bin/readlink
DEBUG: Command 'rm' is /usr/bin/rm
DEBUG: Command 'sed' is /usr/bin/sed
DEBUG: Command 'sort' is /usr/bin/sort
DEBUG: Command 'tar' is /usr/bin/tar
DEBUG: Command 'tr' is /usr/bin/tr
DEBUG: Command 'which' is /usr/bin/which
DEBUG: Checking for a sane 'head' implementation
DEBUG: Checking for a sane 'sort' implementation
DEBUG: Checking for a working AWK interpreter
DEBUG: Verifying Git implementation is not buggy Git for Windows
DEBUG: Verifying Git autocrlf is not enabled
Installing Oh My Fish to /home/howard/.local/share/omf...
Using release channel "stable".
Cloning master from https://github.com/oh-my-fish/oh-my-fish.git...
Setting up Oh My Fish configuration...
Updating https://github.com/oh-my-fish/packages-main master... error: bad signature 0x00000000
fatal: index file corrupt
Error
Install aborted: Error installing plugins

Oh My Fish installation failed.

If you think that it's a bug, please open an
issue with the complete installation log here:

http://github.com/oh-my-fish/oh-my-fish/issues

This problem is only observed on WSL v1, the installation proceeds normally on my other Linux hosts.

Creating a clone of the repository manually seems to work:

~ $ git clone https://github.com/oh-my-fish/packages-main
Cloning into 'packages-main'...
remote: Enumerating objects: 1428, done.
remote: Counting objects: 100% (59/59), done.
remote: Compressing objects: 100% (44/44), done.
remote: Total 1428 (delta 23), reused 36 (delta 13), pack-reused 1369
Receiving objects: 100% (1428/1428), 216.19 KiB | 1.12 MiB/s, done.
Resolving deltas: 100% (598/598), done.
~ $ cd packages-main/
~/packages-main $ git remote -v
origin  https://github.com/oh-my-fish/packages-main (fetch)
origin  https://github.com/oh-my-fish/packages-main (push)
~ /packages-main $ git fetch origin
~/packages-main $