$ git clone -n https://src.fedoraproject.org/rpms/lsb_release.git /var/lib/mock/f45-build-17582-501/root/chroot_tmpdir/scmroot/lsb_release
Cloning into '/var/lib/mock/f45-build-17582-501/root/chroot_tmpdir/scmroot/lsb_release'...
$ git fetch origin 1491f333a96f85df8bb756af5117a2b29c63f095:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lsb_release
 * [new ref]         1491f333a96f85df8bb756af5117a2b29c63f095 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1491f33 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild