$ git clone -n https://src.fedoraproject.org/rpms/rust-lexiclean.git /var/lib/mock/f45-build-42874-797/root/chroot_tmpdir/scmroot/rust-lexiclean
Cloning into '/var/lib/mock/f45-build-42874-797/root/chroot_tmpdir/scmroot/rust-lexiclean'...
$ git fetch origin 52bceb6ac18fdc1ab6160b0efd624f74e3bb4984:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-lexiclean
 * [new ref]         52bceb6ac18fdc1ab6160b0efd624f74e3bb4984 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 52bceb6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild