$ git clone -n https://src.fedoraproject.org/rpms/libarrow.git /var/lib/mock/f41-build-856083-167441/root/chroot_tmpdir/scmroot/libarrow
Cloning into '/var/lib/mock/f41-build-856083-167441/root/chroot_tmpdir/scmroot/libarrow'...
$ git fetch origin 3035b98eb1a186e1cfe54b1711872d5ebda7e54c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libarrow
 * [new ref]         3035b98eb1a186e1cfe54b1711872d5ebda7e54c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3035b98 Arrow 16.1.0, rebuild with liborc-2.0.2