$ git clone -n https://src.fedoraproject.org/rpms/matrix-synapse.git /var/lib/mock/f39-build-1703366-41216/root/chroot_tmpdir/scmroot/matrix-synapse
Cloning into '/var/lib/mock/f39-build-1703366-41216/root/chroot_tmpdir/scmroot/matrix-synapse'...
$ git fetch origin e1f9b871e02f82db9dfaddc2ba102de735c98eda:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/matrix-synapse
 * [new ref]         e1f9b871e02f82db9dfaddc2ba102de735c98eda -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e1f9b87 Update to 1.95.1 (CVE-2023-43796)