$ git clone -n https://src.fedoraproject.org/rpms/python-baseconv.git /var/lib/mock/f45-build-29722-640/root/chroot_tmpdir/scmroot/python-baseconv
Cloning into '/var/lib/mock/f45-build-29722-640/root/chroot_tmpdir/scmroot/python-baseconv'...
$ git fetch origin d98194947689dc4e1b0dca63dd97540385688450:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-baseconv
 * [new ref]         d98194947689dc4e1b0dca63dd97540385688450 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d981949 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild