(подумав) или, возможно, post-checkout.
"post-checkout
This hook is invoked when a git checkout is run after having updated
the worktree. The hook is given three parameters: the ref of the
previous HEAD, the ref of the new HEAD (which may or may not have
changed), and a flag indicating whether the checkout was a branch
checkout (changing branches, flag=1) or a file checkout (retrieving a
file from the index, flag=0). This hook cannot affect the outcome of
git checkout."

Whatever works.