$ git clone -n https://src.fedoraproject.org/rpms/ghc-clientsession.git /var/lib/mock/f38-build-side-42-init-devel-871070-28444/root/chroot_tmpdir/scmroot/ghc-clientsession
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-871070-28444/root/chroot_tmpdir/scmroot/ghc-clientsession'...
$ git fetch origin 00f54b7de3c602ae7fdf57e7b725c73fc06aaf38:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-clientsession
 * [new ref]         00f54b7de3c602ae7fdf57e7b725c73fc06aaf38 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 00f54b7 Convert to %autorelease and %autochangelog