$ git clone -n https://src.fedoraproject.org/rpms/botan.git /var/lib/mock/f41-build-side-1-2749775-31006/root/chroot_tmpdir/scmroot/botan
Cloning into '/var/lib/mock/f41-build-side-1-2749775-31006/root/chroot_tmpdir/scmroot/botan'...
$ git fetch origin 5752be65926fd7c92690ab4f3b6fde3e20aa4b7f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/botan
 * [new ref]         5752be65926fd7c92690ab4f3b6fde3e20aa4b7f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5752be6 convert license to SPDX