$ git clone -n https://src.fedoraproject.org/rpms/rust-serial_test0.6.git /var/lib/mock/f40-build-2063700-49167/root/chroot_tmpdir/scmroot/rust-serial_test0.6
Cloning into '/var/lib/mock/f40-build-2063700-49167/root/chroot_tmpdir/scmroot/rust-serial_test0.6'...
$ git fetch origin 5518bd9065cf26921499091cc03b39d4bded01b9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-serial_test0.6
 * [new ref]         5518bd9065cf26921499091cc03b39d4bded01b9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5518bd9 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild