$ git clone -n https://src.fedoraproject.org/rpms/ghc-basic-prelude.git /var/lib/mock/f38-build-side-42-init-devel-614322-26309/root/chroot_tmpdir/scmroot/ghc-basic-prelude
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-614322-26309/root/chroot_tmpdir/scmroot/ghc-basic-prelude'...
$ git fetch origin 413c8ec88d9caa6b770202d892ffa011610e7c97:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-basic-prelude
 * [new ref]         413c8ec88d9caa6b770202d892ffa011610e7c97 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 413c8ec Convert to %autorelease and %autochangelog