$ git clone -n https://src.fedoraproject.org/rpms/python-sphinxcontrib-bibtex.git /var/lib/mock/f40-build-2029849-47504/root/chroot_tmpdir/scmroot/python-sphinxcontrib-bibtex
Cloning into '/var/lib/mock/f40-build-2029849-47504/root/chroot_tmpdir/scmroot/python-sphinxcontrib-bibtex'...
$ git fetch origin 19932cd7bac00412fac8663010fc86561e40781a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-sphinxcontrib-bibtex
 * [new ref]         19932cd7bac00412fac8663010fc86561e40781a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 19932cd Version 2.6.1.  Drop upstreamed sup patch.