$ git clone -n https://src.fedoraproject.org/rpms/rust-backtrace.git /var/lib/mock/f40-build-2659360-66918/root/chroot_tmpdir/scmroot/rust-backtrace
Cloning into '/var/lib/mock/f40-build-2659360-66918/root/chroot_tmpdir/scmroot/rust-backtrace'...
$ git fetch origin ee1fc5dbb929dff5140222086bf7cd0535db4e25:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-backtrace
 * [new ref]         ee1fc5dbb929dff5140222086bf7cd0535db4e25 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ee1fc5d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild