$ git clone -n https://src.fedoraproject.org/rpms/nitrokey-app.git /var/lib/mock/f45-build-19686-553/root/chroot_tmpdir/scmroot/nitrokey-app
Cloning into '/var/lib/mock/f45-build-19686-553/root/chroot_tmpdir/scmroot/nitrokey-app'...
$ git fetch origin 313c28cd9bb31970720d9dd7f992605912cd2cb8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nitrokey-app
 * [new ref]         313c28cd9bb31970720d9dd7f992605912cd2cb8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 313c28c move to forge macros, build with cmake + ninja