$ git clone -n https://src.fedoraproject.org/rpms/fedora-messaging.git /var/lib/mock/f41-build-side-1-2786486-32612/root/chroot_tmpdir/scmroot/fedora-messaging
Cloning into '/var/lib/mock/f41-build-side-1-2786486-32612/root/chroot_tmpdir/scmroot/fedora-messaging'...
$ git fetch origin 95e28e9b80d5cf346cb11cbbc1b85026019d694e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fedora-messaging
 * [new ref]         95e28e9b80d5cf346cb11cbbc1b85026019d694e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 95e28e9 convert GPLv2+ license to SPDX