$ git clone -n https://src.fedoraproject.org/rpms/clang16.git /var/lib/mock/f41-build-side-1-2672029-29182/root/chroot_tmpdir/scmroot/clang16
Cloning into '/var/lib/mock/f41-build-side-1-2672029-29182/root/chroot_tmpdir/scmroot/clang16'...
$ git fetch origin 03d4043d40af738e89e5808c90a213e070854a46:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/clang16
 * [new ref]         03d4043d40af738e89e5808c90a213e070854a46 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 03d4043 This package is not supported anymore