$ git clone -n https://src.fedoraproject.org/rpms/rust-git2.git /var/lib/mock/f40-build-2353466-60255/root/chroot_tmpdir/scmroot/rust-git2
Cloning into '/var/lib/mock/f40-build-2353466-60255/root/chroot_tmpdir/scmroot/rust-git2'...
$ git fetch origin 653d170e2bedb405d7266a74aff04b859df08427:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-git2
 * [new ref]         653d170e2bedb405d7266a74aff04b859df08427 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 653d170 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild