$ git clone -n https://src.fedoraproject.org/rpms/python-uvloop.git /var/lib/mock/f40-build-735734-106464/root/chroot_tmpdir/scmroot/python-uvloop
Cloning into '/var/lib/mock/f40-build-735734-106464/root/chroot_tmpdir/scmroot/python-uvloop'...
$ git fetch origin ca153ddbb1f337ee2ffcd0c7eb8ceeb41c47c73d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-uvloop
 * [new ref]         ca153ddbb1f337ee2ffcd0c7eb8ceeb41c47c73d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ca153dd Update to 0.18.0 (close RHBZ#2244190)