fatal: You are on a branch yet to be born

[ChrisRosser]

Hi, I have an issue following the install instructions. Can you help?

 ✔ Container 5etools-docker  Running                                       0.0s
uid=0(root) gid=0(root) groups=0(root)
grep: /usr/local/apache2/htdocs/index.html: No such file or directory
 === Checking directory permissions for /usr/local/apache2/htdocs
drwxr-xr-x 4 1000 1000 4096 May 23 08:35 /usr/local/apache2/htdocs
 === Using GitHub mirror at https://github.com/5etools-mirror-2/5etools-mirror-2.github.io.git
 === Using existing git repository
 === Pulling latest files from GitHub...
fatal: You are on a branch yet to be born