$ git clone -n https://src.fedoraproject.org/rpms/rust-arboard.git /var/lib/mock/f40-build-2496967-61664/root/chroot_tmpdir/scmroot/rust-arboard
Cloning into '/var/lib/mock/f40-build-2496967-61664/root/chroot_tmpdir/scmroot/rust-arboard'...
$ git fetch origin c82e08da3a4691ab89add1f34742435c2ba7d368:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-arboard
 * [new ref]         c82e08da3a4691ab89add1f34742435c2ba7d368 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c82e08d Update to version 3.3.1; Fixes RHBZ#2263959