$ git clone -n https://src.fedoraproject.org/rpms/ghc-gio.git /var/lib/mock/f38-build-side-42-init-devel-900020-28589/root/chroot_tmpdir/scmroot/ghc-gio
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-900020-28589/root/chroot_tmpdir/scmroot/ghc-gio'...
$ git fetch origin 7c22cd3a6989fe03a15691425501f5a21488fb8a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-gio
 * [new ref]         7c22cd3a6989fe03a15691425501f5a21488fb8a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7c22cd3 Convert to %autorelease and %autochangelog