$ git clone -n https://src.fedoraproject.org/rpms/golang-github-shurcool-graphql.git /var/lib/mock/f41-build-1036372-18724/root/chroot_tmpdir/scmroot/golang-github-shurcool-graphql
Cloning into '/var/lib/mock/f41-build-1036372-18724/root/chroot_tmpdir/scmroot/golang-github-shurcool-graphql'...
$ git fetch origin fa2a7ce8fe7942fa018cd0d6022372f616ce6ad9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-shurcool-graphql
 * [new ref]         fa2a7ce8fe7942fa018cd0d6022372f616ce6ad9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fa2a7ce Fix FTBFS