Git Repo changes ssh fingerprint - how to update your known_hosts file

gistfile1.txt

1) Open known_hosts file and look for the invalid host
nano ~/.ssh/known_hosts

2) Remove the line that has the invalid host.  Should be the same host in your .git/config of your repo
ssh-keygen -R [dev.blahblah.com]:1234

3) Pull from repo
git pull

4) You should see something similar to this.  Answer 'yes' when asked.
The authenticity of host '[dev.blahblah.com]:1234 ([1.2.3.4]:1234)' can't be established.
RSA key fingerprint is 4d:70:fc:34:43:3d:93:9e:42:29:cz:94:48:51:cz:18.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '[dev.blahblah.com]:1.2.3.4,[9.8.7.6]:1234' (RSA) to the list of known hosts.

if you know the name of the domain host in file, you can just do this in a single command:
ssh-keygen -f ~/.ssh/known_hosts -R "github.com"

replace github.com whatever host you want to remove

Awesome! Thanks, @xero 👍