$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-cvec.git /var/lib/mock/f41-build-856847-167776/root/chroot_tmpdir/scmroot/gap-pkg-cvec
Cloning into '/var/lib/mock/f41-build-856847-167776/root/chroot_tmpdir/scmroot/gap-pkg-cvec'...
$ git fetch origin 981044d511c2f6330e0153241b68f514348ed125:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-cvec
 * [new ref]         981044d511c2f6330e0153241b68f514348ed125 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 981044d Version 2.8.2