$ git clone -n https://src.fedoraproject.org/rpms/rust-test-case-core.git /var/lib/mock/f40-build-2683552-67972/root/chroot_tmpdir/scmroot/rust-test-case-core
Cloning into '/var/lib/mock/f40-build-2683552-67972/root/chroot_tmpdir/scmroot/rust-test-case-core'...
$ git fetch origin 7d508b4c7b8d63a391b41ad884e23269505bb3cc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-test-case-core
 * [new ref]         7d508b4c7b8d63a391b41ad884e23269505bb3cc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7d508b4 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild