$ git clone -n https://src.fedoraproject.org/rpms/rust-memoffset.git /var/lib/mock/f39-build-1455990-32920/root/chroot_tmpdir/scmroot/rust-memoffset
Cloning into '/var/lib/mock/f39-build-1455990-32920/root/chroot_tmpdir/scmroot/rust-memoffset'...
$ git fetch origin 9e51546128a00c76aedcefeebfd25877efb665a2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-memoffset
 * [new ref]         9e51546128a00c76aedcefeebfd25877efb665a2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9e51546 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild