The Firmware-Version seems to be a bit of, the git describe --tags in the makefile via Github Actions provides a different GITHUB_SHA Value then the last commit in the PR

https://github.com/freifunkMUC/site-ffm/blob/gluon-v2023.2.x/.github/workflows/firmware.yml#L61

3f9bce8

ddf3c15

3f9bce8 != ddf3c15

More Info:

But this is not the GITHUB_SHA for pull_request event. The GITHUB_REF for pull_request event is PR merge branch refs/pull/:prNumber/merge. And the GITHUB_SHA is the last merge commit on the GITHUB_REF branch. This GITHUB_SHA does not exist in any current branch in repo. So you will get fatal: bad object.

• https://github.com/orgs/community/discussions/26325

Solutions:

if [ "$GITHUB_EVENT_NAME" == "pull_request" ]; then
    GITHUB_SHA=$(cat $GITHUB_EVENT_PATH | jq -r .pull_request.head.sha)
fi