$ git clone -n https://src.fedoraproject.org/rpms/hledger-web.git /var/lib/mock/f39-build-1858905-42458/root/chroot_tmpdir/scmroot/hledger-web
Cloning into '/var/lib/mock/f39-build-1858905-42458/root/chroot_tmpdir/scmroot/hledger-web'...
$ git fetch origin 0ac7b3cd78871a70321e5a2af4254786cf4c975a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hledger-web
 * [new ref]         0ac7b3cd78871a70321e5a2af4254786cf4c975a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0ac7b3c https://hackage.haskell.org/package/hledger-web-1.30/changelog