$ git clone -n https://src.fedoraproject.org/rpms/rust-mktemp.git /var/lib/mock/f40-build-2681946-67963/root/chroot_tmpdir/scmroot/rust-mktemp
Cloning into '/var/lib/mock/f40-build-2681946-67963/root/chroot_tmpdir/scmroot/rust-mktemp'...
$ git fetch origin be45f4931958ed6ee31cc6cbc6f42c07f2a9ba53:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-mktemp
 * [new ref]         be45f4931958ed6ee31cc6cbc6f42c07f2a9ba53 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be45f49 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild