$ git clone -n https://src.fedoraproject.org/rpms/rust-streaming-stats.git /var/lib/mock/f45-build-45191-821/root/chroot_tmpdir/scmroot/rust-streaming-stats
Cloning into '/var/lib/mock/f45-build-45191-821/root/chroot_tmpdir/scmroot/rust-streaming-stats'...
$ git fetch origin 454e61bcedd0721dfade512be9bcf23eabde2ea0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-streaming-stats
 * [new ref]         454e61bcedd0721dfade512be9bcf23eabde2ea0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 454e61b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild