$ git clone -n https://src.fedoraproject.org/rpms/rust-memmem.git /var/lib/mock/f38-build-side-43-rust-devel-1415269-31454/root/chroot_tmpdir/scmroot/rust-memmem
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1415269-31454/root/chroot_tmpdir/scmroot/rust-memmem'...
$ git fetch origin 8116388d41ace24fa783e72563390552cca38f95:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-memmem
 * [new ref]         8116388d41ace24fa783e72563390552cca38f95 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8116388 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild