$ git clone -n https://src.fedoraproject.org/rpms/rust-apple-flat-package.git /var/lib/mock/f42-build-3252975-41225/root/chroot_tmpdir/scmroot/rust-apple-flat-package
Cloning into '/var/lib/mock/f42-build-3252975-41225/root/chroot_tmpdir/scmroot/rust-apple-flat-package'...
$ git fetch origin 7af2368168dd0d99dc5c623a072501b5e96b2ceb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-apple-flat-package
 * [new ref]         7af2368168dd0d99dc5c623a072501b5e96b2ceb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7af2368 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild