$ git clone -n https://src.fedoraproject.org/rpms/rubygem-rchardet.git /var/lib/mock/f40-build-2323365-58710/root/chroot_tmpdir/scmroot/rubygem-rchardet
Cloning into '/var/lib/mock/f40-build-2323365-58710/root/chroot_tmpdir/scmroot/rubygem-rchardet'...
$ git fetch origin 0d474a46b5dd5f16fc7e4bf6dc4593abce101253:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-rchardet
 * [new ref]         0d474a46b5dd5f16fc7e4bf6dc4593abce101253 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0d474a4 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild