$ git clone -n https://src.fedoraproject.org/rpms/rust-image.git /var/lib/mock/f42-build-3231198-41191/root/chroot_tmpdir/scmroot/rust-image
Cloning into '/var/lib/mock/f42-build-3231198-41191/root/chroot_tmpdir/scmroot/rust-image'...
$ git fetch origin 9a606ea8b680c5d352d173f6f0ed539836ef8314:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-image
 * [new ref]         9a606ea8b680c5d352d173f6f0ed539836ef8314 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9a606ea Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild