$ git clone -n https://src.fedoraproject.org/rpms/google-compute-engine-guest-configs.git /var/lib/mock/f42-build-side-1-3502161-45977/root/chroot_tmpdir/scmroot/google-compute-engine-guest-configs
Cloning into '/var/lib/mock/f42-build-side-1-3502161-45977/root/chroot_tmpdir/scmroot/google-compute-engine-guest-configs'...
$ git fetch origin 21aa4c2d4ac99c54c02568711236596eed4673de:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/google-compute-engine-guest-configs
 * [new ref]         21aa4c2d4ac99c54c02568711236596eed4673de -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 21aa4c2 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild