$ git clone -n https://src.fedoraproject.org/rpms/freetalk.git /var/lib/mock/f45-build-9259-400/root/chroot_tmpdir/scmroot/freetalk
Cloning into '/var/lib/mock/f45-build-9259-400/root/chroot_tmpdir/scmroot/freetalk'...
$ git fetch origin 5923a6782f733d2ba448540bd55fca5002c2646d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/freetalk
 * [new ref]         5923a6782f733d2ba448540bd55fca5002c2646d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5923a67 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild