$ git clone -n https://src.fedoraproject.org/rpms/doctest.git /var/lib/mock/f40-build-801834-143876/root/chroot_tmpdir/scmroot/doctest
Cloning into '/var/lib/mock/f40-build-801834-143876/root/chroot_tmpdir/scmroot/doctest'...
$ git fetch origin f4777ef7e99cfe3bf8ac2dd5a28a3ff0d3f27892:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/doctest
 * [new ref]         f4777ef7e99cfe3bf8ac2dd5a28a3ff0d3f27892 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f4777ef drop patch for 2.4.9; merged upstream