$ git clone -n https://src.fedoraproject.org/rpms/python-gensim.git /var/lib/mock/f41-build-side-1-3012210-36868/root/chroot_tmpdir/scmroot/python-gensim
Cloning into '/var/lib/mock/f41-build-side-1-3012210-36868/root/chroot_tmpdir/scmroot/python-gensim'...
$ git fetch origin aa2d7f06d181e92ee3ca29d64470b284867ff6e6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-gensim
 * [new ref]         aa2d7f06d181e92ee3ca29d64470b284867ff6e6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aa2d7f0 Retired: https://pagure.io/releng/issue/12278