$ git clone -n https://src.fedoraproject.org/rpms/adwaita-icon-theme.git /var/lib/mock/f41-build-side-1-2631452-25710/root/chroot_tmpdir/scmroot/adwaita-icon-theme
Cloning into '/var/lib/mock/f41-build-side-1-2631452-25710/root/chroot_tmpdir/scmroot/adwaita-icon-theme'...
$ git fetch origin 3aa5d5b18a4b769ceba7c49c63356f9e014d9170:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/adwaita-icon-theme
 * [new ref]         3aa5d5b18a4b769ceba7c49c63356f9e014d9170 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3aa5d5b Update to 47.beta