$ git clone -n http://fedora.riscv.rocks:3000/rpms/libarrow.git /var/lib/mock/f41-build-832267-157334/root/chroot_tmpdir/scmroot/libarrow
Cloning into '/var/lib/mock/f41-build-832267-157334/root/chroot_tmpdir/scmroot/libarrow'...
$ git fetch origin d54ad22802961b3645891b8854259dad9eb781a2:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/libarrow
 * [new ref]         d54ad22802961b3645891b8854259dad9eb781a2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d54ad22 Rebuilt for Fedora/RISCV (riscv64); adding .rvreX to Release: