$ git clone -n https://src.fedoraproject.org/rpms/python-sexpdata.git /var/lib/mock/f40-build-2232011-53316/root/chroot_tmpdir/scmroot/python-sexpdata
Cloning into '/var/lib/mock/f40-build-2232011-53316/root/chroot_tmpdir/scmroot/python-sexpdata'...
$ git fetch origin b0dd93077dbecbe6c45011b32d5c7642ce10c2ed:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-sexpdata
 * [new ref]         b0dd93077dbecbe6c45011b32d5c7642ce10c2ed -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b0dd930 Update to 1.0.1