See https://github.com/ACCESS-NRI/ACCESS-OM2/actions/runs/9203230162/job/25355101630#step:7:91, https://github.com/ACCESS-NRI/ACCESS-OM2/actions/runs/9216320542/job/25356375475

When deploying onto Prerelease 0.21, we get errors relating to the initial checking of the spack install itself:

'/bin/git' '-c' 'advice.detachedHead=false' 'fetch' '--tags'
ProcessError: Command exited with status 1:

@aidanheerdegen had mentioned that this was an issue when we were --single-branch cloning our initial spack environments, but git status shows that we are currently on the releases/0.21 branch, not in a Detached HEAD state.

Verified that this happens for both existing and new PRs of models, so this issue holds up deployments of models more generally. It was working earlier that day (23/05/2024), see ACCESS-NRI/ACCESS-ESM1.5#5 (comment).

Things to do

• Verify that the spack config blame configs seems alright
• Verify that ACCESS-NRI/spack hasn't vanished
• Verify that .git seems okay in spack
• 😭
• Determine if it is fetching the tags of something else - not necessarily the spack install. Maybe it is actually fetching the tags of access-om2, perhaps?
• figure out if the new SSH key on tm70_ci is to blame

If all else fails:

• Delete prerelease environment, intialise prerelease environment, redeploy all open model PRs