$ git clone -n https://src.fedoraproject.org/rpms/rust-drg.git /var/lib/mock/f40-build-2340963-59737/root/chroot_tmpdir/scmroot/rust-drg
Cloning into '/var/lib/mock/f40-build-2340963-59737/root/chroot_tmpdir/scmroot/rust-drg'...
$ git fetch origin 489f50ba79987908594757ed1b5df14c2b9b68d0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-drg
 * [new ref]         489f50ba79987908594757ed1b5df14c2b9b68d0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 489f50b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild