$ git clone -n https://src.fedoraproject.org/rpms/gtest.git /var/lib/mock/f45-build-13141-446/root/chroot_tmpdir/scmroot/gtest
Cloning into '/var/lib/mock/f45-build-13141-446/root/chroot_tmpdir/scmroot/gtest'...
$ git fetch origin 12103e7ded38b70ba67dc024c39134a25a5a3273:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtest
 * [new ref]         12103e7ded38b70ba67dc024c39134a25a5a3273 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 12103e7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild