https://github.com/harfbuzz/harfbuzz.github.io/issues/4
From CI logs at https://github.com/harfbuzz/harfbuzz/runs/2758234200:
+ git init
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: git branch -m <name>
We want the branch too be main not master.
Apparently the previous version of gtk-doc was doing weird changes like 1b40da99bb and d1d9bff14c
in order to make every to have something for pushing and
now that we don't have such changes it will fail.
Alternatively we can go for `git commit --allow-empty`, guess better to
pollute history of https://github.com/harfbuzz/harfbuzz.github.io however.