$ git clone -n https://src.fedoraproject.org/rpms/breeze-gtk.git /var/lib/mock/f40-build-2538884-61857/root/chroot_tmpdir/scmroot/breeze-gtk
Cloning into '/var/lib/mock/f40-build-2538884-61857/root/chroot_tmpdir/scmroot/breeze-gtk'...
$ git fetch origin 2a7fa5748560dcda7f61343aa30ac6c4dc2c29c8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/breeze-gtk
 * [new ref]         2a7fa5748560dcda7f61343aa30ac6c4dc2c29c8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2a7fa57 6.0.2