$ git clone -n https://src.fedoraproject.org/rpms/rust-invalidstring.git /var/lib/mock/f40-build-2681415-67958/root/chroot_tmpdir/scmroot/rust-invalidstring
Cloning into '/var/lib/mock/f40-build-2681415-67958/root/chroot_tmpdir/scmroot/rust-invalidstring'...
$ git fetch origin b60f594fb86a532e4f012b1ef066f5157d41b980:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-invalidstring
 * [new ref]         b60f594fb86a532e4f012b1ef066f5157d41b980 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b60f594 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild