$ git clone -n https://src.fedoraproject.org/rpms/tetrinetx.git /var/lib/mock/f45-build-36956-709/root/chroot_tmpdir/scmroot/tetrinetx
Cloning into '/var/lib/mock/f45-build-36956-709/root/chroot_tmpdir/scmroot/tetrinetx'...
$ git fetch origin 5843b39b66b334b21a3f280ea59048cfbca1ad0f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tetrinetx
 * [new ref]         5843b39b66b334b21a3f280ea59048cfbca1ad0f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5843b39 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild