$ git clone -n https://src.fedoraproject.org/rpms/python-sphinxcontrib-bibtex.git /var/lib/mock/f41-build-side-1-2746527-30963/root/chroot_tmpdir/scmroot/python-sphinxcontrib-bibtex
Cloning into '/var/lib/mock/f41-build-side-1-2746527-30963/root/chroot_tmpdir/scmroot/python-sphinxcontrib-bibtex'...
$ git fetch origin ce953542a9a62496ba5239651191b0ccd113a08d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-sphinxcontrib-bibtex
 * [new ref]         ce953542a9a62496ba5239651191b0ccd113a08d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ce95354 Version 2.6.3