$ git clone -n https://src.fedoraproject.org/rpms/bluechi.git /var/lib/mock/f40-build-757421-119363/root/chroot_tmpdir/scmroot/bluechi
Cloning into '/var/lib/mock/f40-build-757421-119363/root/chroot_tmpdir/scmroot/bluechi'...
$ git fetch origin cbd01b552cf73c72491dcba20cce1529e69915b2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bluechi
 * [new ref]         cbd01b552cf73c72491dcba20cce1529e69915b2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cbd01b5 update BlueChi to v0.6.0