$ git clone -n https://src.fedoraproject.org/rpms/kapman.git /var/lib/mock/f40-build-2075922-49520/root/chroot_tmpdir/scmroot/kapman
Cloning into '/var/lib/mock/f40-build-2075922-49520/root/chroot_tmpdir/scmroot/kapman'...
$ git fetch origin 5a755593934213c6a854a4ceb843caa8a6628a77:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kapman
 * [new ref]         5a755593934213c6a854a4ceb843caa8a6628a77 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5a75559 Update sources file