$ git clone -n http://fedora.riscv.rocks:3000/rpms/ghc-cborg-json.git /var/lib/mock/f38-build-727160-100533/root/chroot_tmpdir/scmroot/ghc-cborg-json
Cloning into '/var/lib/mock/f38-build-727160-100533/root/chroot_tmpdir/scmroot/ghc-cborg-json'...
$ git fetch origin ec3d3f9d3fb1821fb606d5427e8b63e864650f31:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/ghc-cborg-json
 * [new ref]         ec3d3f9d3fb1821fb606d5427e8b63e864650f31 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ec3d3f9 Rebuilt for Fedora/RISCV (riscv64); adding .rvreX to Release: