$ git clone -n https://src.fedoraproject.org/rpms/lld15.git /var/lib/mock/f45-build-17450-499/root/chroot_tmpdir/scmroot/lld15
Cloning into '/var/lib/mock/f45-build-17450-499/root/chroot_tmpdir/scmroot/lld15'...
$ git fetch origin 01f45987c9ee83bcdd7f23db2da5267099c37075:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lld15
 * [new ref]         01f45987c9ee83bcdd7f23db2da5267099c37075 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 01f4598 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild