$ git clone -n https://src.fedoraproject.org/rpms/rust-kstring.git /var/lib/mock/f40-build-2652936-66897/root/chroot_tmpdir/scmroot/rust-kstring
Cloning into '/var/lib/mock/f40-build-2652936-66897/root/chroot_tmpdir/scmroot/rust-kstring'...
$ git fetch origin 2e3d767012e4d159766bb1c088a007af26378c12:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-kstring
 * [new ref]         2e3d767012e4d159766bb1c088a007af26378c12 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2e3d767 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild