$ git clone -n https://src.fedoraproject.org/rpms/tix.git /var/lib/mock/f45-build-37225-712/root/chroot_tmpdir/scmroot/tix
Cloning into '/var/lib/mock/f45-build-37225-712/root/chroot_tmpdir/scmroot/tix'...
$ git fetch origin 966555db757c12f677e1ca5725093b2c2ac28a45:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tix
 * [new ref]         966555db757c12f677e1ca5725093b2c2ac28a45 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 966555d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild