$ git clone -n https://src.fedoraproject.org/rpms/ghc-pretty-simple.git /var/lib/mock/f38-build-side-42-init-devel-1112083-30084/root/chroot_tmpdir/scmroot/ghc-pretty-simple
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1112083-30084/root/chroot_tmpdir/scmroot/ghc-pretty-simple'...
$ git fetch origin ba8afcd425e1e9ccc904c733c2ecedfb86c1e10a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-pretty-simple
 * [new ref]         ba8afcd425e1e9ccc904c733c2ecedfb86c1e10a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ba8afcd ppc64le: disable testsuite threads