$ git clone -n https://src.fedoraproject.org/rpms/rust-serde-value.git /var/lib/mock/f40-build-2657987-66917/root/chroot_tmpdir/scmroot/rust-serde-value
Cloning into '/var/lib/mock/f40-build-2657987-66917/root/chroot_tmpdir/scmroot/rust-serde-value'...
$ git fetch origin 2abf18fb5194864837b1a418fc8aec813c72f96f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-serde-value
 * [new ref]         2abf18fb5194864837b1a418fc8aec813c72f96f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2abf18f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild