$ git clone -n https://src.fedoraproject.org/rpms/rust-elliptic-curve.git /var/lib/mock/f40-build-2660822-66918/root/chroot_tmpdir/scmroot/rust-elliptic-curve
Cloning into '/var/lib/mock/f40-build-2660822-66918/root/chroot_tmpdir/scmroot/rust-elliptic-curve'...
$ git fetch origin 83e1a8453302bf94685757f8d038f9be8924fe71:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-elliptic-curve
 * [new ref]         83e1a8453302bf94685757f8d038f9be8924fe71 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 83e1a84 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild