$ git clone -n https://src.fedoraproject.org/rpms/system-config-printer.git /var/lib/mock/f40-build-2042843-48578/root/chroot_tmpdir/scmroot/system-config-printer
Cloning into '/var/lib/mock/f40-build-2042843-48578/root/chroot_tmpdir/scmroot/system-config-printer'...
$ git fetch origin 327c49e4667d0571b02d62a11ae6c2d48c9ccad7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/system-config-printer
 * [new ref]         327c49e4667d0571b02d62a11ae6c2d48c9ccad7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 327c49e SPDX migration