$ git clone -n https://src.fedoraproject.org/rpms/harfbuzz.git /var/lib/mock/f40-build-2218927-52622/root/chroot_tmpdir/scmroot/harfbuzz
Cloning into '/var/lib/mock/f40-build-2218927-52622/root/chroot_tmpdir/scmroot/harfbuzz'...
$ git fetch origin 1607e2a97d33e7ecbcd5230f2647a576c0fdbcb8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/harfbuzz
 * [new ref]         1607e2a97d33e7ecbcd5230f2647a576c0fdbcb8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1607e2a Remove the upstream released patch