$ git clone -n https://src.fedoraproject.org/rpms/golang-github-ziutek-telnet.git /var/lib/mock/f41-build-1036532-18736/root/chroot_tmpdir/scmroot/golang-github-ziutek-telnet
Cloning into '/var/lib/mock/f41-build-1036532-18736/root/chroot_tmpdir/scmroot/golang-github-ziutek-telnet'...
$ git fetch origin 811f2afba09b331bbe8aeb825331b2b1e90a9f8e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-ziutek-telnet
 * [new ref]         811f2afba09b331bbe8aeb825331b2b1e90a9f8e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 811f2af Fix FTBFS