$ git clone -n https://src.fedoraproject.org/rpms/sasl-xoauth2.git /var/lib/mock/f45-build-35573-696/root/chroot_tmpdir/scmroot/sasl-xoauth2
Cloning into '/var/lib/mock/f45-build-35573-696/root/chroot_tmpdir/scmroot/sasl-xoauth2'...
$ git fetch origin 6d76a173f568a3e28ba74bb9d63f51c245d93382:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sasl-xoauth2
 * [new ref]         6d76a173f568a3e28ba74bb9d63f51c245d93382 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6d76a17 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild