$ git clone -n https://src.fedoraproject.org/rpms/crosswords.git /var/lib/mock/f42-build-3353554-45017/root/chroot_tmpdir/scmroot/crosswords
Cloning into '/var/lib/mock/f42-build-3353554-45017/root/chroot_tmpdir/scmroot/crosswords'...
$ git fetch origin 67ff4118ebcd68c5f60132e8fd1770625846bef4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/crosswords
 * [new ref]         67ff4118ebcd68c5f60132e8fd1770625846bef4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 67ff411 Update to 0.3.14; Fixes: RHBZ#2338908