$ git clone -n https://src.fedoraproject.org/rpms/python-zlib-ng.git /var/lib/mock/f41-build-side-1-2815398-32952/root/chroot_tmpdir/scmroot/python-zlib-ng
Cloning into '/var/lib/mock/f41-build-side-1-2815398-32952/root/chroot_tmpdir/scmroot/python-zlib-ng'...
$ git fetch origin 224f842edf173e6f200e8b75c7e7ea8bd42225da:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-zlib-ng
 * [new ref]         224f842edf173e6f200e8b75c7e7ea8bd42225da -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 224f842 Update to 0.5.1 upstream release