$ git clone -n https://src.fedoraproject.org/rpms/python-u-msgpack-python.git /var/lib/mock/f39-build-1573590-37809/root/chroot_tmpdir/scmroot/python-u-msgpack-python
Cloning into '/var/lib/mock/f39-build-1573590-37809/root/chroot_tmpdir/scmroot/python-u-msgpack-python'...
$ git fetch origin b93bbc349b25f364820d28e828720a4ae2dbb5dd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-u-msgpack-python
 * [new ref]         b93bbc349b25f364820d28e828720a4ae2dbb5dd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b93bbc3 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild