$ git clone -n https://src.fedoraproject.org/rpms/rust-cpp_demangle.git /var/lib/mock/f38-build-side-42-init-devel-1394353-31050/root/chroot_tmpdir/scmroot/rust-cpp_demangle
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1394353-31050/root/chroot_tmpdir/scmroot/rust-cpp_demangle'...
$ git fetch origin a1dda29b03b045c78bc07a4c1ba29940c5ca5e1b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cpp_demangle
 * [new ref]         a1dda29b03b045c78bc07a4c1ba29940c5ca5e1b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a1dda29 Update to version 0.4.3; Fixes RHBZ#2232800