$ git clone -n https://src.fedoraproject.org/rpms/rust-tinyvec_macros.git /var/lib/mock/f40-build-2658217-66917/root/chroot_tmpdir/scmroot/rust-tinyvec_macros
Cloning into '/var/lib/mock/f40-build-2658217-66917/root/chroot_tmpdir/scmroot/rust-tinyvec_macros'...
$ git fetch origin 66323e8d96dd1e108fcbd0f5c3a61392e17ca504:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-tinyvec_macros
 * [new ref]         66323e8d96dd1e108fcbd0f5c3a61392e17ca504 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 66323e8 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild