$ git clone -n https://src.fedoraproject.org/rpms/matrix-synapse.git /var/lib/mock/f39-build-1741514-41367/root/chroot_tmpdir/scmroot/matrix-synapse
Cloning into '/var/lib/mock/f39-build-1741514-41367/root/chroot_tmpdir/scmroot/matrix-synapse'...
$ git fetch origin c580cef2800693ea772135a96ee4faba31c12a4d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/matrix-synapse
 * [new ref]         c580cef2800693ea772135a96ee4faba31c12a4d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c580cef Update to v1.96.1