$ git clone -n https://src.fedoraproject.org/rpms/rust-zvariant4.git /var/lib/mock/f42-build-3252966-41225/root/chroot_tmpdir/scmroot/rust-zvariant4
Cloning into '/var/lib/mock/f42-build-3252966-41225/root/chroot_tmpdir/scmroot/rust-zvariant4'...
$ git fetch origin 473188b1984f3903ff6367dae61ef55ba1844542:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-zvariant4
 * [new ref]         473188b1984f3903ff6367dae61ef55ba1844542 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 473188b Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild