$ git clone -n https://src.fedoraproject.org/rpms/rust-rocket_cors.git /var/lib/mock/f42-build-3264624-41245/root/chroot_tmpdir/scmroot/rust-rocket_cors
Cloning into '/var/lib/mock/f42-build-3264624-41245/root/chroot_tmpdir/scmroot/rust-rocket_cors'...
$ git fetch origin 5c957f5dd654a2919d3bab249d9ea5bf0fccd19e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rocket_cors
 * [new ref]         5c957f5dd654a2919d3bab249d9ea5bf0fccd19e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5c957f5 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild