Change to OpenSSH on Windows git and add ssh-key to agent

ssh-agent.ps1

# https://learn.microsoft.com/en-us/windows-server/administration/openssh/openssh_keymanagement
# By default the ssh-agent service is disabled. Configure it to start automatically.
# Make sure you're running as an Administrator.
Get-Service ssh-agent | Set-Service -StartupType Automatic

# Start the service
Start-Service ssh-agent

# This should return a status of Running
Get-Service ssh-agent

# Now load your key files into ssh-agent
ssh-add $env:USERPROFILE\.ssh\id_ed25519 # change to your desired key

git config --global core.sshCommand "'C:\Windows\System32\OpenSSH\ssh.exe'" # or anywhere where your OpenSSH installation is