$ git clone -n https://src.fedoraproject.org/rpms/python-freezegun.git /var/lib/mock/f45-build-30768-647/root/chroot_tmpdir/scmroot/python-freezegun
Cloning into '/var/lib/mock/f45-build-30768-647/root/chroot_tmpdir/scmroot/python-freezegun'...
$ git fetch origin b3c7fdaf9bae25e8b6c799dc32f2c16d59df8edd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-freezegun
 * [new ref]         b3c7fdaf9bae25e8b6c799dc32f2c16d59df8edd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b3c7fda Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild