$ git clone -n https://src.fedoraproject.org/rpms/golang-gopkg-readline-1.git /var/lib/mock/f41-build-1036611-18741/root/chroot_tmpdir/scmroot/golang-gopkg-readline-1
Cloning into '/var/lib/mock/f41-build-1036611-18741/root/chroot_tmpdir/scmroot/golang-gopkg-readline-1'...
$ git fetch origin 9c87b79adae27864352bd781dee66ee2ef4ba156:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-gopkg-readline-1
 * [new ref]         9c87b79adae27864352bd781dee66ee2ef4ba156 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9c87b79 Fix FTBFS