$ git clone -n https://src.fedoraproject.org/rpms/tango-icon-theme-extras.git /var/lib/mock/f41-build-side-1-2670496-29058/root/chroot_tmpdir/scmroot/tango-icon-theme-extras
Cloning into '/var/lib/mock/f41-build-side-1-2670496-29058/root/chroot_tmpdir/scmroot/tango-icon-theme-extras'...
$ git fetch origin 507557f9bdfe978800c202d87e4112738adf75d6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tango-icon-theme-extras
 * [new ref]         507557f9bdfe978800c202d87e4112738adf75d6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 507557f convert license to SPDX