$ git clone -n https://src.fedoraproject.org/rpms/python-noggin-messages.git /var/lib/mock/f45-build-31725-655/root/chroot_tmpdir/scmroot/python-noggin-messages
Cloning into '/var/lib/mock/f45-build-31725-655/root/chroot_tmpdir/scmroot/python-noggin-messages'...
$ git fetch origin a854e92f303ef6e2e2d08cd3b55cb8970291ce1c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-noggin-messages
 * [new ref]         a854e92f303ef6e2e2d08cd3b55cb8970291ce1c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a854e92 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild