$ git clone -n https://src.fedoraproject.org/rpms/python-pingouin.git /var/lib/mock/f40-build-2576880-62280/root/chroot_tmpdir/scmroot/python-pingouin
Cloning into '/var/lib/mock/f40-build-2576880-62280/root/chroot_tmpdir/scmroot/python-pingouin'...
$ git fetch origin abb13578b2ea217a0ceea5b863cb1b8fbfe5eb7b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pingouin
 * [new ref]         abb13578b2ea217a0ceea5b863cb1b8fbfe5eb7b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at abb1357 Update to 0.5.4 (close RHBZ#2258253)