$ git clone -n https://src.fedoraproject.org/rpms/matrix-synapse.git /var/lib/mock/f39-build-2173159-51059/root/chroot_tmpdir/scmroot/matrix-synapse
Cloning into '/var/lib/mock/f39-build-2173159-51059/root/chroot_tmpdir/scmroot/matrix-synapse'...
$ git fetch origin daf78449e7b737fb3c8205b2f2916b23e4e6bd81:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/matrix-synapse
 * [new ref]         daf78449e7b737fb3c8205b2f2916b23e4e6bd81 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at daf7844 Update to v1.98.0