$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-Deep-JSON.git /var/lib/mock/f41-build-side-1-2774774-32365/root/chroot_tmpdir/scmroot/perl-Test-Deep-JSON
Cloning into '/var/lib/mock/f41-build-side-1-2774774-32365/root/chroot_tmpdir/scmroot/perl-Test-Deep-JSON'...
$ git fetch origin 77372304eefec7e787e432b9625ae0766344efbd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-Deep-JSON
 * [new ref]         77372304eefec7e787e432b9625ae0766344efbd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7737230 convert GPL+ or Artistic license to SPDX