$ git clone -n https://src.fedoraproject.org/rpms/rust-rand0.5.git /var/lib/mock/f40-build-2063392-49167/root/chroot_tmpdir/scmroot/rust-rand0.5
Cloning into '/var/lib/mock/f40-build-2063392-49167/root/chroot_tmpdir/scmroot/rust-rand0.5'...
$ git fetch origin 66b42dee8e8d7703e5545603d49ad2a7073e370e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rand0.5
 * [new ref]         66b42dee8e8d7703e5545603d49ad2a7073e370e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 66b42de Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild