$ git clone -n https://src.fedoraproject.org/rpms/rust-rand_xoshiro.git /var/lib/mock/f45-build-44263-812/root/chroot_tmpdir/scmroot/rust-rand_xoshiro
Cloning into '/var/lib/mock/f45-build-44263-812/root/chroot_tmpdir/scmroot/rust-rand_xoshiro'...
$ git fetch origin 4c83240e9b42cd1abe5022c91868c85012ae1f8b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rand_xoshiro
 * [new ref]         4c83240e9b42cd1abe5022c91868c85012ae1f8b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4c83240 Update to version 0.8.1; Fixes RHBZ#2478156