$ git clone -n https://src.fedoraproject.org/rpms/rust-rand0.6.git /var/lib/mock/f40-build-2643040-66480/root/chroot_tmpdir/scmroot/rust-rand0.6
Cloning into '/var/lib/mock/f40-build-2643040-66480/root/chroot_tmpdir/scmroot/rust-rand0.6'...
$ git fetch origin 969dd95c354aaff75dc56e53075e385123a2304f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rand0.6
 * [new ref]         969dd95c354aaff75dc56e53075e385123a2304f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 969dd95 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild