$ git clone -n https://src.fedoraproject.org/rpms/rust-futures-timer.git /var/lib/mock/f40-build-2631488-65782/root/chroot_tmpdir/scmroot/rust-futures-timer
Cloning into '/var/lib/mock/f40-build-2631488-65782/root/chroot_tmpdir/scmroot/rust-futures-timer'...
$ git fetch origin e177293cf9fd81069d1ced3d1ca0736d9d9aab63:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-futures-timer
 * [new ref]         e177293cf9fd81069d1ced3d1ca0736d9d9aab63 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e177293 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild