$ git clone -n https://src.fedoraproject.org/rpms/xsd.git /var/lib/mock/f41-build-side-1-2671474-29139/root/chroot_tmpdir/scmroot/xsd
Cloning into '/var/lib/mock/f41-build-side-1-2671474-29139/root/chroot_tmpdir/scmroot/xsd'...
$ git fetch origin 23e442c471861fe6d999ba765453633b5f6eb5b1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xsd
 * [new ref]         23e442c471861fe6d999ba765453633b5f6eb5b1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 23e442c convert license to SPDX