$ git clone -n https://src.fedoraproject.org/rpms/ghc-colour.git /var/lib/mock/f38-build-side-42-init-devel-917107-28734/root/chroot_tmpdir/scmroot/ghc-colour
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-917107-28734/root/chroot_tmpdir/scmroot/ghc-colour'...
$ git fetch origin e154959a960c3bb3e772c5eeb700777c1c67ab48:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-colour
 * [new ref]         e154959a960c3bb3e772c5eeb700777c1c67ab48 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e154959 Convert to %autorelease and %autochangelog