$ git clone -n https://src.fedoraproject.org/rpms/python-anyjson.git /var/lib/mock/f45-build-29376-637/root/chroot_tmpdir/scmroot/python-anyjson
Cloning into '/var/lib/mock/f45-build-29376-637/root/chroot_tmpdir/scmroot/python-anyjson'...
$ git fetch origin 5902f2f156ebcc53b3e99da21e3edfda3b67c1b6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-anyjson
 * [new ref]         5902f2f156ebcc53b3e99da21e3edfda3b67c1b6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5902f2f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild