$ git clone -n https://src.fedoraproject.org/rpms/rust-memmap.git /var/lib/mock/f40-build-2037909-48136/root/chroot_tmpdir/scmroot/rust-memmap
Cloning into '/var/lib/mock/f40-build-2037909-48136/root/chroot_tmpdir/scmroot/rust-memmap'...
$ git fetch origin 464f9d97b5a41c0e23bf27509cb3717e7d8f58ee:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-memmap
 * [new ref]         464f9d97b5a41c0e23bf27509cb3717e7d8f58ee -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 464f9d9 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild