$ git clone -n https://src.fedoraproject.org/rpms/hscolour.git /var/lib/mock/f41-build-837894-159471/root/chroot_tmpdir/scmroot/hscolour
Cloning into '/var/lib/mock/f41-build-837894-159471/root/chroot_tmpdir/scmroot/hscolour'...
$ git fetch origin 71237cf0d7069058173188809a7be316665b6275:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hscolour
 * [new ref]         71237cf0d7069058173188809a7be316665b6275 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 71237cf https://hackage.haskell.org/package/hscolour-1.25/changelog