$ git clone -n https://src.fedoraproject.org/rpms/rust-rd-hashd-intf.git /var/lib/mock/f40-build-1924420-25102/root/chroot_tmpdir/scmroot/rust-rd-hashd-intf
Cloning into '/var/lib/mock/f40-build-1924420-25102/root/chroot_tmpdir/scmroot/rust-rd-hashd-intf'...
$ git fetch origin 74cb3b3226669a6a6eb7e5bfed47f84e63b1d095:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rd-hashd-intf
 * [new ref]         74cb3b3226669a6a6eb7e5bfed47f84e63b1d095 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 74cb3b3 Rebuild for rd-util update