Failed to execute git checkout 'f10cbbfd745415200a5c15cb828be5f9a2f15100' -- && git reset --hard 'f10cbbfd745415200a5c15cb828be5f9a2f15100' -- fatal: reference is not a tree: f10cbbfd745415200a5c15cb828be5f9a2f15100 It looks like the commit hash is not available in the repository, maybe the commit was removed from the branch? Run "composer update wporg/wporg-parent-2021" to resolve this.