$ git clone -n https://src.fedoraproject.org/rpms/fox.git /var/lib/mock/f41-build-856717-167755/root/chroot_tmpdir/scmroot/fox
Cloning into '/var/lib/mock/f41-build-856717-167755/root/chroot_tmpdir/scmroot/fox'...
$ git fetch origin 0116c6b596e7efcfca8857da8906fac446b66019:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fox
 * [new ref]         0116c6b596e7efcfca8857da8906fac446b66019 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0116c6b 1.6.58