$ git clone -n https://src.fedoraproject.org/rpms/readline.git /var/lib/mock/f41-build-side-1-2824913-33350/root/chroot_tmpdir/scmroot/readline
Cloning into '/var/lib/mock/f41-build-side-1-2824913-33350/root/chroot_tmpdir/scmroot/readline'...
$ git fetch origin 47af8cc87dd0400a3c146832b7a7a16dc7d0a56a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/readline
 * [new ref]         47af8cc87dd0400a3c146832b7a7a16dc7d0a56a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 47af8cc Update to readline-8.2 patchlevel 13