$ git clone -n https://src.fedoraproject.org/rpms/python-ajsonrpc.git /var/lib/mock/f45-build-29328-637/root/chroot_tmpdir/scmroot/python-ajsonrpc
Cloning into '/var/lib/mock/f45-build-29328-637/root/chroot_tmpdir/scmroot/python-ajsonrpc'...
$ git fetch origin e95fc46840839bd1c7bc70c43f0a3f6eb1e7439f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-ajsonrpc
 * [new ref]         e95fc46840839bd1c7bc70c43f0a3f6eb1e7439f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e95fc46 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild