$ git clone -n https://src.fedoraproject.org/rpms/zeromq-ada.git /var/lib/mock/f41-build-2044733-25295/root/chroot_tmpdir/scmroot/zeromq-ada
Cloning into '/var/lib/mock/f41-build-2044733-25295/root/chroot_tmpdir/scmroot/zeromq-ada'...
$ git fetch origin cb4a0c1f79949abcfb12532954a243b7f5adc6f3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/zeromq-ada
 * [new ref]         cb4a0c1f79949abcfb12532954a243b7f5adc6f3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cb4a0c1 convert GPLv2+ license to SPDX