$ git clone -n https://src.fedoraproject.org/rpms/rust-cexpr.git /var/lib/mock/f38-build-side-43-rust-devel-1410916-31423/root/chroot_tmpdir/scmroot/rust-cexpr
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1410916-31423/root/chroot_tmpdir/scmroot/rust-cexpr'...
$ git fetch origin 7c193c78cc9dac708230420811dc9f736879213c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cexpr
 * [new ref]         7c193c78cc9dac708230420811dc9f736879213c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7c193c7 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild