$ git clone -n https://src.fedoraproject.org/rpms/rust-arboard.git /var/lib/mock/f40-build-2711959-71922/root/chroot_tmpdir/scmroot/rust-arboard
Cloning into '/var/lib/mock/f40-build-2711959-71922/root/chroot_tmpdir/scmroot/rust-arboard'...
$ git fetch origin bd1438227526c81bfe6281d6aa07af66e6a723f1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-arboard
 * [new ref]         bd1438227526c81bfe6281d6aa07af66e6a723f1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bd14382 Update to version 3.3.2; Fixes RHBZ#2267462