$ git clone -n https://src.fedoraproject.org/rpms/libarrow.git /var/lib/mock/f41-build-843167-161910/root/chroot_tmpdir/scmroot/libarrow
Cloning into '/var/lib/mock/f41-build-843167-161910/root/chroot_tmpdir/scmroot/libarrow'...
$ git fetch origin 980a20722da52aad159cc80a68fb30626a408ffd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libarrow
 * [new ref]         980a20722da52aad159cc80a68fb30626a408ffd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 980a207 Rebuild for re2 20240702