$ git clone -n https://src.fedoraproject.org/rpms/rust-memmap2_0.5.git /var/lib/mock/f39-build-1569521-37712/root/chroot_tmpdir/scmroot/rust-memmap2_0.5
Cloning into '/var/lib/mock/f39-build-1569521-37712/root/chroot_tmpdir/scmroot/rust-memmap2_0.5'...
$ git fetch origin 43cd57f7ee263b8ccce1c3b1f85a1c8c7a434c3d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-memmap2_0.5
 * [new ref]         43cd57f7ee263b8ccce1c3b1f85a1c8c7a434c3d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 43cd57f Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild