How to avoid repeatedly being asked for SSH passphrase

If you keep getting asked to enter your SSH passphrase when doing SSH-related things like a git pull:

Enter passphrase for key '/Users/<account-name>/.ssh/id_ed25519': 

Run the below:

eval $(ssh-agent) && ssh-add

You’ll be prompted to enter your passphrase once but not again on subsequent commands requiring SSH (not until you logout or restart your machine).