$ git clone -n https://src.fedoraproject.org/rpms/kst.git /var/lib/mock/f41-build-846386-163059/root/chroot_tmpdir/scmroot/kst
Cloning into '/var/lib/mock/f41-build-846386-163059/root/chroot_tmpdir/scmroot/kst'...
$ git fetch origin 2c64e5ee293cbb8286b30bf1cb7e8160ce85fcdb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kst
 * [new ref]         2c64e5ee293cbb8286b30bf1cb7e8160ce85fcdb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2c64e5e cfitsio rebuild