$ git clone -n https://src.fedoraproject.org/rpms/matrix-synapse.git /var/lib/mock/f40-build-773791-127380/root/chroot_tmpdir/scmroot/matrix-synapse
Cloning into '/var/lib/mock/f40-build-773791-127380/root/chroot_tmpdir/scmroot/matrix-synapse'...
$ git fetch origin 34b361fd15d5a3e98f4faf86e13781c83dd6372d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/matrix-synapse
 * [new ref]         34b361fd15d5a3e98f4faf86e13781c83dd6372d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 34b361f Change upstream to Element’s fork under AGPL