$ git clone -n https://src.fedoraproject.org/rpms/elementary-onboarding.git /var/lib/mock/f40-build-2686838-68073/root/chroot_tmpdir/scmroot/elementary-onboarding
Cloning into '/var/lib/mock/f40-build-2686838-68073/root/chroot_tmpdir/scmroot/elementary-onboarding'...
$ git fetch origin 547449f560aaa4d7c74a4026505d4a49ae533606:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/elementary-onboarding
 * [new ref]         547449f560aaa4d7c74a4026505d4a49ae533606 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 547449f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild