$ git clone -n https://src.fedoraproject.org/rpms/abseil-cpp.git /var/lib/mock/f40-build-2138896-50844/root/chroot_tmpdir/scmroot/abseil-cpp
Cloning into '/var/lib/mock/f40-build-2138896-50844/root/chroot_tmpdir/scmroot/abseil-cpp'...
$ git fetch origin b38e94481e31d24b437bc47d43312809b2138e37:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/abseil-cpp
 * [new ref]         b38e94481e31d24b437bc47d43312809b2138e37 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b38e944 Rebuild for gtest 1.14.0