$ git clone -n https://src.fedoraproject.org/rpms/ghc-base-compat-batteries.git /var/lib/mock/f39-build-1937521-43136/root/chroot_tmpdir/scmroot/ghc-base-compat-batteries
Cloning into '/var/lib/mock/f39-build-1937521-43136/root/chroot_tmpdir/scmroot/ghc-base-compat-batteries'...
$ git fetch origin 1743b22d92c1252fda1ebda188b405b62cbc1ce7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-base-compat-batteries
 * [new ref]         1743b22d92c1252fda1ebda188b405b62cbc1ce7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1743b22 https://hackage.haskell.org/package/base-compat-batteries-0.12.3/changelog