$ git clone -n https://src.fedoraproject.org/rpms/libetnaviv.git /var/lib/mock/f45-build-16135-483/root/chroot_tmpdir/scmroot/libetnaviv
Cloning into '/var/lib/mock/f45-build-16135-483/root/chroot_tmpdir/scmroot/libetnaviv'...
$ git fetch origin cca1f2f726d5e09bf6b7faa0a88d16b4b4d7b5f7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libetnaviv
 * [new ref]         cca1f2f726d5e09bf6b7faa0a88d16b4b4d7b5f7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cca1f2f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild