$ git clone -n https://src.fedoraproject.org/rpms/ghc-copilot-c99.git /var/lib/mock/f41-build-858541-168433/root/chroot_tmpdir/scmroot/ghc-copilot-c99
Cloning into '/var/lib/mock/f41-build-858541-168433/root/chroot_tmpdir/scmroot/ghc-copilot-c99'...
$ git fetch origin 68a8e9fe2445090cc0878853fe57609e72732b1c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-copilot-c99
 * [new ref]         68a8e9fe2445090cc0878853fe57609e72732b1c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 68a8e9f Convert to %autorelease and %autochangelog