$ git clone -n https://src.fedoraproject.org/rpms/ghc-unliftio-core.git /var/lib/mock/f38-build-side-42-init-devel-922229-28737/root/chroot_tmpdir/scmroot/ghc-unliftio-core
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-922229-28737/root/chroot_tmpdir/scmroot/ghc-unliftio-core'...
$ git fetch origin 45674d55d05978fcbe3fdb860d7ac8aa87054f94:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-unliftio-core
 * [new ref]         45674d55d05978fcbe3fdb860d7ac8aa87054f94 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 45674d5 Convert to %autorelease and %autochangelog