$ git clone -n https://src.fedoraproject.org/rpms/matrix-synapse.git /var/lib/mock/f41-build-side-2-python-2696810-30351/root/chroot_tmpdir/scmroot/matrix-synapse
Cloning into '/var/lib/mock/f41-build-side-2-python-2696810-30351/root/chroot_tmpdir/scmroot/matrix-synapse'...
$ git fetch origin 8879d0238342c6287a80e6f868897fb636d4739f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/matrix-synapse
 * [new ref]         8879d0238342c6287a80e6f868897fb636d4739f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8879d02 Update to v1.112.0