$ git clone -n https://src.fedoraproject.org/rpms/bluechi.git /var/lib/mock/f38-build-side-42-init-devel-1408206-31368/root/chroot_tmpdir/scmroot/bluechi
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1408206-31368/root/chroot_tmpdir/scmroot/bluechi'...
$ git fetch origin dddccb448b11d2a952dd6070b8c97d0e38fb00a0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bluechi
 * [new ref]         dddccb448b11d2a952dd6070b8c97d0e38fb00a0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dddccb4 Update the README