$ git clone -n https://src.fedoraproject.org/rpms/rust-futures-timer.git /var/lib/mock/f38-build-side-43-rust-devel-1410291-31415/root/chroot_tmpdir/scmroot/rust-futures-timer
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1410291-31415/root/chroot_tmpdir/scmroot/rust-futures-timer'...
$ git fetch origin 3308f278d66c1c8a145528efb9fd61bed3e90f1a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-futures-timer
 * [new ref]         3308f278d66c1c8a145528efb9fd61bed3e90f1a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3308f27 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild