$ git clone -n https://src.fedoraproject.org/rpms/whipper.git /var/lib/mock/f41-build-814638-149000/root/chroot_tmpdir/scmroot/whipper
Cloning into '/var/lib/mock/f41-build-814638-149000/root/chroot_tmpdir/scmroot/whipper'...
$ git fetch origin cbdc196fc53b610558c017a8a9bf20db194ba988:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/whipper
 * [new ref]         cbdc196fc53b610558c017a8a9bf20db194ba988 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cbdc196 Cherry pick commit from upstream that updates now deprecated usage of dump in ruamel.yaml