$ git clone -n https://src.fedoraproject.org/rpms/megaglest-data.git /var/lib/mock/f40-build-2610733-63890/root/chroot_tmpdir/scmroot/megaglest-data
Cloning into '/var/lib/mock/f40-build-2610733-63890/root/chroot_tmpdir/scmroot/megaglest-data'...
$ git fetch origin 5550b46b68513e86808ebd0e9461b5750646918b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/megaglest-data
 * [new ref]         5550b46b68513e86808ebd0e9461b5750646918b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5550b46 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild