$ git clone -n https://src.fedoraproject.org/rpms/crrcsim.git /var/lib/mock/f41-build-side-1-2633630-25945/root/chroot_tmpdir/scmroot/crrcsim
Cloning into '/var/lib/mock/f41-build-side-1-2633630-25945/root/chroot_tmpdir/scmroot/crrcsim'...
$ git fetch origin f70b7e0e1910dc259afac81df7064d4e53453765:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/crrcsim
 * [new ref]         f70b7e0e1910dc259afac81df7064d4e53453765 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f70b7e0 convert GPLv2 license to SPDX