$ git clone -n https://src.fedoraproject.org/rpms/apr-api-docs.git /var/lib/mock/f40-build-1990873-43435/root/chroot_tmpdir/scmroot/apr-api-docs
Cloning into '/var/lib/mock/f40-build-1990873-43435/root/chroot_tmpdir/scmroot/apr-api-docs'...
$ git fetch origin a55df7d034b28977a8acfc02f20a3880b3d1a2a3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/apr-api-docs
 * [new ref]         a55df7d034b28977a8acfc02f20a3880b3d1a2a3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a55df7d Bump up to 1.7.3 to fix FTBFS.