$ git clone -n https://src.fedoraproject.org/rpms/python-commoncode.git /var/lib/mock/f45-build-30087-642/root/chroot_tmpdir/scmroot/python-commoncode
Cloning into '/var/lib/mock/f45-build-30087-642/root/chroot_tmpdir/scmroot/python-commoncode'...
$ git fetch origin 1478df67ffcbed74d161f0b46bb234b006befd9e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-commoncode
 * [new ref]         1478df67ffcbed74d161f0b46bb234b006befd9e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1478df6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild