$ git clone -n https://src.fedoraproject.org/rpms/rust-rand_xorshift0.2 /var/lib/mock/f42-build-3453416-45488/root/chroot_tmpdir/scmroot/rust-rand_xorshift0.2
Cloning into '/var/lib/mock/f42-build-3453416-45488/root/chroot_tmpdir/scmroot/rust-rand_xorshift0.2'...
$ git fetch origin 16400886eb54e6cc904896f716d990cf68d3e6f8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rand_xorshift0.2
 * [new ref]         16400886eb54e6cc904896f716d990cf68d3e6f8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1640088 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild