$ git clone -n https://src.fedoraproject.org/rpms/ansible-core.git /var/lib/mock/f40-build-2585975-62419/root/chroot_tmpdir/scmroot/ansible-core
Cloning into '/var/lib/mock/f40-build-2585975-62419/root/chroot_tmpdir/scmroot/ansible-core'...
$ git fetch origin b2387b93d1c5eb71f2654dbb5b437eab97eb9340:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ansible-core
 * [new ref]         b2387b93d1c5eb71f2654dbb5b437eab97eb9340 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b2387b9 Update to 2.16.4. Fixes rhbz#2261507.