$ git clone -n https://src.fedoraproject.org/rpms/ghc-tls-session-manager.git /var/lib/mock/f38-build-side-42-init-devel-1030280-29709/root/chroot_tmpdir/scmroot/ghc-tls-session-manager
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1030280-29709/root/chroot_tmpdir/scmroot/ghc-tls-session-manager'...
$ git fetch origin d2f9f6b5f81bf9c6b665414e118f8df50ea62d47:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-tls-session-manager
 * [new ref]         d2f9f6b5f81bf9c6b665414e118f8df50ea62d47 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d2f9f6b Convert to %autorelease and %autochangelog