$ git clone -n https://src.fedoraproject.org/rpms/google-benchmark.git /var/lib/mock/f45-build-12864-444/root/chroot_tmpdir/scmroot/google-benchmark
Cloning into '/var/lib/mock/f45-build-12864-444/root/chroot_tmpdir/scmroot/google-benchmark'...
$ git fetch origin dfcc0c96bad8887d7268993a552106f7d6642da0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/google-benchmark
 * [new ref]         dfcc0c96bad8887d7268993a552106f7d6642da0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dfcc0c9 Make the new libpfm-devel dep. arch-specific