$ git clone -n https://src.fedoraproject.org/rpms/ghc-filtrable.git /var/lib/mock/f38-build-side-42-init-devel-771093-27757/root/chroot_tmpdir/scmroot/ghc-filtrable
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-771093-27757/root/chroot_tmpdir/scmroot/ghc-filtrable'...
$ git fetch origin f7e723b0b1efb5e31360d1cace690c3a63840762:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-filtrable
 * [new ref]         f7e723b0b1efb5e31360d1cace690c3a63840762 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f7e723b Convert to %autorelease and %autochangelog