$ git clone -n https://src.fedoraproject.org/rpms/rust-futures.git /var/lib/mock/f40-build-2108314-50601/root/chroot_tmpdir/scmroot/rust-futures
Cloning into '/var/lib/mock/f40-build-2108314-50601/root/chroot_tmpdir/scmroot/rust-futures'...
$ git fetch origin dc47f6da58ed99e5cc64bfe64ae4feff0ae970a5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-futures
 * [new ref]         dc47f6da58ed99e5cc64bfe64ae4feff0ae970a5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dc47f6d Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild