$ git clone -n https://src.fedoraproject.org/rpms/python-google-cloud-billing.git /var/lib/mock/f38-build-side-42-init-devel-1035263-29746/root/chroot_tmpdir/scmroot/python-google-cloud-billing
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1035263-29746/root/chroot_tmpdir/scmroot/python-google-cloud-billing'...
$ git fetch origin bcf90bf6b4d868ec5e134838f96a81cb7f8ecb70:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-google-cloud-billing
 * [new ref]         bcf90bf6b4d868ec5e134838f96a81cb7f8ecb70 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bcf90bf Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild