$ git clone -n https://src.fedoraproject.org/rpms/spamassassin.git /var/lib/mock/f40-build-2042155-48504/root/chroot_tmpdir/scmroot/spamassassin
Cloning into '/var/lib/mock/f40-build-2042155-48504/root/chroot_tmpdir/scmroot/spamassassin'...
$ git fetch origin 6d3fa1c0e7c5ec11460a6bf82c4192147b995c37:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/spamassassin
 * [new ref]         6d3fa1c0e7c5ec11460a6bf82c4192147b995c37 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6d3fa1c Migrate License: field to SPDX format