$ git clone -n https://src.fedoraproject.org/rpms/rust-nu-command.git /var/lib/mock/f41-build-1108207-20093/root/chroot_tmpdir/scmroot/rust-nu-command
Cloning into '/var/lib/mock/f41-build-1108207-20093/root/chroot_tmpdir/scmroot/rust-nu-command'...
$ git fetch origin 1b3ff6b7502b949d0dacb00a09cc88a1d2bb8cde:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-nu-command
 * [new ref]         1b3ff6b7502b949d0dacb00a09cc88a1d2bb8cde -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1b3ff6b Drop unused patch