$ git clone -n https://src.fedoraproject.org/rpms/matrix-synapse.git /var/lib/mock/f40-build-2553871-62007/root/chroot_tmpdir/scmroot/matrix-synapse
Cloning into '/var/lib/mock/f40-build-2553871-62007/root/chroot_tmpdir/scmroot/matrix-synapse'...
$ git fetch origin 73c40867a09c101f1d359e4fcd4ba710b31acb44:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/matrix-synapse
 * [new ref]         73c40867a09c101f1d359e4fcd4ba710b31acb44 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 73c4086 Update to v1.102.0