$ git clone -n https://src.fedoraproject.org/rpms/emacs-rpm-spec-mode.git /var/lib/mock/f41-build-884507-16596/root/chroot_tmpdir/scmroot/emacs-rpm-spec-mode
Cloning into '/var/lib/mock/f41-build-884507-16596/root/chroot_tmpdir/scmroot/emacs-rpm-spec-mode'...
$ git fetch origin 608e329375581482da5012cc79462a382dc1d6ea:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/emacs-rpm-spec-mode
 * [new ref]         608e329375581482da5012cc79462a382dc1d6ea -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 608e329 Eliminate use of obsolete %patchN syntax (#2283636)