$ git clone -n https://src.fedoraproject.org/rpms/rust-rand_pcg0.2 /var/lib/mock/f42-build-3453390-45488/root/chroot_tmpdir/scmroot/rust-rand_pcg0.2
Cloning into '/var/lib/mock/f42-build-3453390-45488/root/chroot_tmpdir/scmroot/rust-rand_pcg0.2'...
$ git fetch origin 0c01013c726358b6d9bf21694be343625a8b0bd0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rand_pcg0.2
 * [new ref]         0c01013c726358b6d9bf21694be343625a8b0bd0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0c01013 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild