$ git clone -n https://src.fedoraproject.org/rpms/guacamole-server.git /var/lib/mock/f41-build-858211-168325/root/chroot_tmpdir/scmroot/guacamole-server
Cloning into '/var/lib/mock/f41-build-858211-168325/root/chroot_tmpdir/scmroot/guacamole-server'...
$ git fetch origin 9dfa2b1d0da93033a332d9556945abd823b0833f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/guacamole-server
 * [new ref]         9dfa2b1d0da93033a332d9556945abd823b0833f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9dfa2b1 Add patch for FFMPEG 7 compatibility