$ git clone -n https://src.fedoraproject.org/rpms/rust-memfd.git /var/lib/mock/f40-build-2681869-67962/root/chroot_tmpdir/scmroot/rust-memfd
Cloning into '/var/lib/mock/f40-build-2681869-67962/root/chroot_tmpdir/scmroot/rust-memfd'...
$ git fetch origin 76a5d3627e7476299208c173210aa631b0e78bbc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-memfd
 * [new ref]         76a5d3627e7476299208c173210aa631b0e78bbc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 76a5d36 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild