$ git clone -n http://fedora.riscv.rocks:3000/rpms/ghc-json.git /var/lib/mock/f38-build-726118-99945/root/chroot_tmpdir/scmroot/ghc-json
Cloning into '/var/lib/mock/f38-build-726118-99945/root/chroot_tmpdir/scmroot/ghc-json'...
$ git fetch origin f42316561f6f4342112f2964e6eda855d4d4a22b:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/ghc-json
 * [new ref]         f42316561f6f4342112f2964e6eda855d4d4a22b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f423165 Rebuilt for Fedora/RISCV (riscv64); adding .rvreX to Release: