$ git clone -n https://src.fedoraproject.org/rpms/python-ciso8601.git /var/lib/mock/f40-build-2213535-52336/root/chroot_tmpdir/scmroot/python-ciso8601
Cloning into '/var/lib/mock/f40-build-2213535-52336/root/chroot_tmpdir/scmroot/python-ciso8601'...
$ git fetch origin 14833b08b99c38b17293f4795873951f34b7f22c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-ciso8601
 * [new ref]         14833b08b99c38b17293f4795873951f34b7f22c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 14833b0 Update to latest upstream release 2.3.1 (closes rhbz#2155669)