$ git clone -n https://src.fedoraproject.org/rpms/gforth.git /var/lib/mock/f41-build-1057785-19407/root/chroot_tmpdir/scmroot/gforth
Cloning into '/var/lib/mock/f41-build-1057785-19407/root/chroot_tmpdir/scmroot/gforth'...
$ git fetch origin 9467da7590117e94ebae82fa2a3eaa8e79aea360:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gforth
 * [new ref]         9467da7590117e94ebae82fa2a3eaa8e79aea360 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9467da7 Eliminate use of obsolete %patchN syntax (#2283636)