$ git clone -n https://src.fedoraproject.org/rpms/bear.git /var/lib/mock/f38-build-side-42-init-devel-950437-28779/root/chroot_tmpdir/scmroot/bear
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-950437-28779/root/chroot_tmpdir/scmroot/bear'...
$ git fetch origin cd85397b8d19ef76eecd5a8c9ee7f19d90272a0f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bear
 * [new ref]         cd85397b8d19ef76eecd5a8c9ee7f19d90272a0f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cd85397 Update to 3.1.1 (close RHBZ#2169039)