$ git clone -n http://fedora.riscv.rocks:3000/rpms/ghc-vector.git /var/lib/mock/f38-build-side-42-init-devel-897888-28570/root/chroot_tmpdir/scmroot/ghc-vector
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-897888-28570/root/chroot_tmpdir/scmroot/ghc-vector'...
$ git fetch origin 623bbe4487d7c2562d9b3fd23eab9810e68e5717:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/ghc-vector
 * [new ref]         623bbe4487d7c2562d9b3fd23eab9810e68e5717 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 623bbe4 Rebuilt for Fedora/RISCV (riscv64); adding .rvreX to Release: