$ git clone -n https://src.fedoraproject.org/rpms/rust-orion.git /var/lib/mock/f40-build-2373823-60412/root/chroot_tmpdir/scmroot/rust-orion
Cloning into '/var/lib/mock/f40-build-2373823-60412/root/chroot_tmpdir/scmroot/rust-orion'...
$ git fetch origin f217d6ee929ac064221f741c1eef7423c75bb81d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-orion
 * [new ref]         f217d6ee929ac064221f741c1eef7423c75bb81d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f217d6e Update to version 0.17.6; Fixes RHBZ#2239606