$ git clone -n https://src.fedoraproject.org/rpms/rust-below-dump.git /var/lib/mock/f41-build-768872-13481/root/chroot_tmpdir/scmroot/rust-below-dump
Cloning into '/var/lib/mock/f41-build-768872-13481/root/chroot_tmpdir/scmroot/rust-below-dump'...
$ git fetch origin 346dae51c3a6e695d91ed1bfbc5e944b69c8473a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-below-dump
 * [new ref]         346dae51c3a6e695d91ed1bfbc5e944b69c8473a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 346dae5 Remove unused patch