$ git clone -n https://src.fedoraproject.org/rpms/coin-or-Ipopt.git /var/lib/mock/f41-build-side-1-2811078-32926/root/chroot_tmpdir/scmroot/coin-or-Ipopt
Cloning into '/var/lib/mock/f41-build-side-1-2811078-32926/root/chroot_tmpdir/scmroot/coin-or-Ipopt'...
$ git fetch origin 67e73c0ccd452f27e4250f15ecd292510954abe6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/coin-or-Ipopt
 * [new ref]         67e73c0ccd452f27e4250f15ecd292510954abe6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 67e73c0 Version 3.14.16