$ git clone -n https://src.fedoraproject.org/rpms/python-betamax.git /var/lib/mock/f40-build-2633986-65971/root/chroot_tmpdir/scmroot/python-betamax
Cloning into '/var/lib/mock/f40-build-2633986-65971/root/chroot_tmpdir/scmroot/python-betamax'...
$ git fetch origin f76e5aee9c9f69dff2448a4b716c86e412ef12de:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-betamax
 * [new ref]         f76e5aee9c9f69dff2448a4b716c86e412ef12de -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f76e5ae 0.9.0