$ git clone -n https://src.fedoraproject.org/rpms/rust-encode_unicode.git /var/lib/mock/f45-build-41426-782/root/chroot_tmpdir/scmroot/rust-encode_unicode
Cloning into '/var/lib/mock/f45-build-41426-782/root/chroot_tmpdir/scmroot/rust-encode_unicode'...
$ git fetch origin f50a300ad96a449c1e64d3c68786889c4441f831:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-encode_unicode
 * [new ref]         f50a300ad96a449c1e64d3c68786889c4441f831 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f50a300 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild