$ git clone -n http://fedora.riscv.rocks:3000/rpms/ghc.git /var/lib/mock/f40-build-775901-128497/root/chroot_tmpdir/scmroot/ghc
Cloning into '/var/lib/mock/f40-build-775901-128497/root/chroot_tmpdir/scmroot/ghc'...
$ git fetch origin 437025a4dbe3b72b372532aca7f26a669de4c49e:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/ghc
 * [new ref]         437025a4dbe3b72b372532aca7f26a669de4c49e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 437025a Upstream dist-git with no changes (rebuild)