$ git clone -n https://src.fedoraproject.org/rpms/rubygem-i18n.git /var/lib/mock/f40-build-2639214-66343/root/chroot_tmpdir/scmroot/rubygem-i18n
Cloning into '/var/lib/mock/f40-build-2639214-66343/root/chroot_tmpdir/scmroot/rubygem-i18n'...
$ git fetch origin 8d56fbd4067faf3f67349fa7618e9a414b2c2513:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-i18n
 * [new ref]         8d56fbd4067faf3f67349fa7618e9a414b2c2513 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8d56fbd Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild