$ git clone -n https://src.fedoraproject.org/rpms/rust-unescape.git /var/lib/mock/f38-build-side-43-rust-devel-1414000-31446/root/chroot_tmpdir/scmroot/rust-unescape
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1414000-31446/root/chroot_tmpdir/scmroot/rust-unescape'...
$ git fetch origin 50ad4ad2a83a0f91bc6b591eef79078ada83f5b6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unescape
 * [new ref]         50ad4ad2a83a0f91bc6b591eef79078ada83f5b6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 50ad4ad Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild