$ git clone -n https://src.fedoraproject.org/rpms/speed-dreams.git /var/lib/mock/f40-build-804992-144659/root/chroot_tmpdir/scmroot/speed-dreams
Cloning into '/var/lib/mock/f40-build-804992-144659/root/chroot_tmpdir/scmroot/speed-dreams'...
$ git fetch origin 7d1d02bdccc952c14bf5094f4eb756232330748b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/speed-dreams
 * [new ref]         7d1d02bdccc952c14bf5094f4eb756232330748b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7d1d02b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild