$ git clone -n https://src.fedoraproject.org/rpms/golang-github-soheilhy-cmux.git /var/lib/mock/f38-build-side-42-init-devel-693077-26899/root/chroot_tmpdir/scmroot/golang-github-soheilhy-cmux
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-693077-26899/root/chroot_tmpdir/scmroot/golang-github-soheilhy-cmux'...
$ git fetch origin 2d8e3a8ba5acc73cc98f91a8286d4684094c88c0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-soheilhy-cmux
 * [new ref]         2d8e3a8ba5acc73cc98f91a8286d4684094c88c0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2d8e3a8 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild