$ git clone -n https://src.fedoraproject.org/rpms/python-gmqtt.git /var/lib/mock/f45-build-30876-648/root/chroot_tmpdir/scmroot/python-gmqtt
Cloning into '/var/lib/mock/f45-build-30876-648/root/chroot_tmpdir/scmroot/python-gmqtt'...
$ git fetch origin 40004ef5a7e172940b71074f454f278afa1caf5f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-gmqtt
 * [new ref]         40004ef5a7e172940b71074f454f278afa1caf5f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 40004ef Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild