$ git clone -n https://src.fedoraproject.org/rpms/matrix-synapse.git /var/lib/mock/f41-build-712916-13041/root/chroot_tmpdir/scmroot/matrix-synapse
Cloning into '/var/lib/mock/f41-build-712916-13041/root/chroot_tmpdir/scmroot/matrix-synapse'...
$ git fetch origin 66ba92113721233301eb569974e7bd71812b417b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/matrix-synapse
 * [new ref]         66ba92113721233301eb569974e7bd71812b417b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 66ba921 Update to v1.108.0