You can set option batch continue before mkdir to ignore any errors and restore the option batch abort after.
host bitbucket.org
IdentityFile ~/.ssh/cv-key# if running bash
if [ -n "$BASH_VERSION" ]; then
# include .bashrc if it exists
if [ -f "$HOME/.bashrc" ]; then
. "$HOME/.bashrc"
fi
fihost bind-hostname 100.100.100.1
Hostname 100.100.100.1
User username
IdentityFile ~/.ssh/keyname