$ git clone -n https://src.fedoraproject.org/rpms/libxchange.git /var/lib/mock/f45-build-17268-497/root/chroot_tmpdir/scmroot/libxchange
Cloning into '/var/lib/mock/f45-build-17268-497/root/chroot_tmpdir/scmroot/libxchange'...
$ git fetch origin a94f0489482f77fdf3d88bc91a3769f7d41c35c3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libxchange
 * [new ref]         a94f0489482f77fdf3d88bc91a3769f7d41c35c3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a94f048 Updated for upstream v1.3.0