repo init for Halium 9.0 on Ubuntu 18.04.6 uses the wrong python

ub@ub:~/halium$ repo init -u https://github.com/Halium/android -b halium-9.0 --depth=1
gpg: keybox '/home/ub/.repoconfig/gnupg/pubring.kbx' created
gpg: /home/ub/.repoconfig/gnupg/trustdb.gpg: trustdb created
gpg: key 16530D5E920F5C65: public key "Repo Maintainer <repo@android.kernel.org>" imported
gpg: key 67B7E448692B382C: public key "Conley Owens <cco3@android.com>" imported
gpg: Total number processed: 2
gpg:               imported: 2

Get https://gerrit.googlesource.com/git-repo/clone.bundle
Get https://gerrit.googlesource.com/git-repo
  File "/home/ub/halium/.repo/repo/main.py", line 79
    file=sys.stderr)
        ^
SyntaxError: invalid syntax

Solved by the commands below but they will probably break something else later.

sudo rm /usr/bin/python
sudo ln -s /usr/bin/python3.6 /usr/bin/python