$ git clone -n https://src.fedoraproject.org/rpms/libcerf.git /var/lib/mock/f40-build-2293667-56213/root/chroot_tmpdir/scmroot/libcerf
Cloning into '/var/lib/mock/f40-build-2293667-56213/root/chroot_tmpdir/scmroot/libcerf'...
$ git fetch origin e9c98ddc24840960ee0c581341b7d1b69348e3cf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libcerf
 * [new ref]         e9c98ddc24840960ee0c581341b7d1b69348e3cf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e9c98dd Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild