$ git clone -n https://src.fedoraproject.org/rpms/rust-heck0.3.git /var/lib/mock/f39-build-1521744-35856/root/chroot_tmpdir/scmroot/rust-heck0.3
Cloning into '/var/lib/mock/f39-build-1521744-35856/root/chroot_tmpdir/scmroot/rust-heck0.3'...
$ git fetch origin 13e8fbdf5be800ed85978143addd5d73c24a1cdc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-heck0.3
 * [new ref]         13e8fbdf5be800ed85978143addd5d73c24a1cdc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 13e8fbd Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild