$ git clone -n https://src.fedoraproject.org/rpms/exercism.git /var/lib/mock/f40-build-2589438-62568/root/chroot_tmpdir/scmroot/exercism
Cloning into '/var/lib/mock/f40-build-2589438-62568/root/chroot_tmpdir/scmroot/exercism'...
$ git fetch origin cc40181df2640f6f9144cd85f0e374a701dca7a0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/exercism
 * [new ref]         cc40181df2640f6f9144cd85f0e374a701dca7a0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cc40181 Update to latest version (#2264431)