$ git clone -n https://src.fedoraproject.org/rpms/rust-serial_test0.6.git /var/lib/mock/f40-build-2683217-67969/root/chroot_tmpdir/scmroot/rust-serial_test0.6
Cloning into '/var/lib/mock/f40-build-2683217-67969/root/chroot_tmpdir/scmroot/rust-serial_test0.6'...
$ git fetch origin bdccd4f94570da9320dfa89b9dd8f7a6b076d027:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-serial_test0.6
 * [new ref]         bdccd4f94570da9320dfa89b9dd8f7a6b076d027 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bdccd4f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild