$ git clone -n https://src.fedoraproject.org/rpms/lw-cli.git /var/lib/mock/f45-build-17781-504/root/chroot_tmpdir/scmroot/lw-cli
Cloning into '/var/lib/mock/f45-build-17781-504/root/chroot_tmpdir/scmroot/lw-cli'...
$ git fetch origin b209d4fb2065d2ebdf9fd4d85a345d74e7ce31ad:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lw-cli
 * [new ref]         b209d4fb2065d2ebdf9fd4d85a345d74e7ce31ad -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b209d4f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild