$ git clone -n https://src.fedoraproject.org/rpms/rust-rand0.6.git /var/lib/mock/f39-build-1522418-35919/root/chroot_tmpdir/scmroot/rust-rand0.6
Cloning into '/var/lib/mock/f39-build-1522418-35919/root/chroot_tmpdir/scmroot/rust-rand0.6'...
$ git fetch origin 65a6a851b44ff3e705b458d62754c67a620a0141:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rand0.6
 * [new ref]         65a6a851b44ff3e705b458d62754c67a620a0141 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 65a6a85 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild