$ git clone -n https://src.fedoraproject.org/rpms/rust-hex-literal.git /var/lib/mock/f39-build-1521748-35856/root/chroot_tmpdir/scmroot/rust-hex-literal
Cloning into '/var/lib/mock/f39-build-1521748-35856/root/chroot_tmpdir/scmroot/rust-hex-literal'...
$ git fetch origin e1c7af7b5d0e05f12931f75aefdec62fdaf87867:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-hex-literal
 * [new ref]         e1c7af7b5d0e05f12931f75aefdec62fdaf87867 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e1c7af7 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild