$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-liepring.git /var/lib/mock/f38-build-side-42-init-devel-921197-28734/root/chroot_tmpdir/scmroot/gap-pkg-liepring
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-921197-28734/root/chroot_tmpdir/scmroot/gap-pkg-liepring'...
$ git fetch origin 3b335e2b2ee0c5d85c503af6e27c22399c6bb376:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-liepring
 * [new ref]         3b335e2b2ee0c5d85c503af6e27c22399c6bb376 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3b335e2 Use the %gap_arches macro.