$ git clone -n https://src.fedoraproject.org/rpms/xxhash.git /var/lib/mock/f33-build-311445-57462/root/chroot_tmpdir/scmroot/xxhash
Cloning into '/var/lib/mock/f33-build-311445-57462/root/chroot_tmpdir/scmroot/xxhash'...
$ git reset --hard 8d016b6d55113b1579d77f2cfb54bc21c0ff228a
HEAD is now at 8d016b6 Update sources file