$ git clone -n https://src.fedoraproject.org/rpms/rust-linux_proc.git /var/lib/mock/f40-build-2681731-67962/root/chroot_tmpdir/scmroot/rust-linux_proc
Cloning into '/var/lib/mock/f40-build-2681731-67962/root/chroot_tmpdir/scmroot/rust-linux_proc'...
$ git fetch origin 46c18777a5a37d67d6767b9178467b2f844b5b78:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-linux_proc
 * [new ref]         46c18777a5a37d67d6767b9178467b2f844b5b78 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 46c1877 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild