$ git clone -n https://src.fedoraproject.org/rpms/tlpi.git /var/lib/mock/f45-build-37234-712/root/chroot_tmpdir/scmroot/tlpi
Cloning into '/var/lib/mock/f45-build-37234-712/root/chroot_tmpdir/scmroot/tlpi'...
$ git fetch origin 9c607fca4362940ae71ec5800aab2cdde6eb5ec1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tlpi
 * [new ref]         9c607fca4362940ae71ec5800aab2cdde6eb5ec1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9c607fc Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild