$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-io.git /var/lib/mock/f40-build-738239-107754/root/chroot_tmpdir/scmroot/gap-pkg-io
Cloning into '/var/lib/mock/f40-build-738239-107754/root/chroot_tmpdir/scmroot/gap-pkg-io'...
$ git fetch origin 6992e76d2b89abc6031c36da2f40647a27a52d8e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-io
 * [new ref]         6992e76d2b89abc6031c36da2f40647a27a52d8e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6992e76 Version 4.8.2