$ git clone -n https://src.fedoraproject.org/rpms/gnupg2.git /var/lib/mock/f41-build-756808-13422/root/chroot_tmpdir/scmroot/gnupg2
Cloning into '/var/lib/mock/f41-build-756808-13422/root/chroot_tmpdir/scmroot/gnupg2'...
$ git fetch origin 0de41c5d784d929d9d802216d341f71f445e5a7d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnupg2
 * [new ref]         0de41c5d784d929d9d802216d341f71f445e5a7d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0de41c5 Fix build when %_bindir==%_sbindir