$ git clone -n https://src.fedoraproject.org/rpms/conmux.git /var/lib/mock/f41-build-1290512-23344/root/chroot_tmpdir/scmroot/conmux
Cloning into '/var/lib/mock/f41-build-1290512-23344/root/chroot_tmpdir/scmroot/conmux'...
$ git fetch origin ec8509e4b0252f93e1e6a4d5e030bb2b39430d8a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/conmux
 * [new ref]         ec8509e4b0252f93e1e6a4d5e030bb2b39430d8a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ec8509e Eliminate use of obsolete %patchN syntax (#2283636)