$ git clone -n https://src.fedoraproject.org/rpms/yaru-theme.git /var/lib/mock/f45-build-39213-732/root/chroot_tmpdir/scmroot/yaru-theme
Cloning into '/var/lib/mock/f45-build-39213-732/root/chroot_tmpdir/scmroot/yaru-theme'...
$ git fetch origin 37dacb0af58c4915bbd2a5859f94f3ccff17aa29:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/yaru-theme
 * [new ref]         37dacb0af58c4915bbd2a5859f94f3ccff17aa29 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 37dacb0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild