$ git clone -n https://src.fedoraproject.org/rpms/ghc-gi-cairo.git /var/lib/mock/f39-build-2043360-48576/root/chroot_tmpdir/scmroot/ghc-gi-cairo
Cloning into '/var/lib/mock/f39-build-2043360-48576/root/chroot_tmpdir/scmroot/ghc-gi-cairo'...
$ git fetch origin 4bd3a807734f1121bd6cfd961bd4c76cae6a8abf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-gi-cairo
 * [new ref]         4bd3a807734f1121bd6cfd961bd4c76cae6a8abf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4bd3a80 https://hackage.haskell.org/package/gi-cairo-1.0.29/changelog