$ git clone -n https://src.fedoraproject.org/rpms/primecount.git /var/lib/mock/f41-build-834226-158239/root/chroot_tmpdir/scmroot/primecount
Cloning into '/var/lib/mock/f41-build-834226-158239/root/chroot_tmpdir/scmroot/primecount'...
$ git fetch origin 9f6a61fbe47d857a9e0f47c11a94e0dda9a5d0a5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/primecount
 * [new ref]         9f6a61fbe47d857a9e0f47c11a94e0dda9a5d0a5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9f6a61f Update to primecount-7.14