$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-Spelling.git /var/lib/mock/f41-build-side-1-2774785-32365/root/chroot_tmpdir/scmroot/perl-Test-Spelling
Cloning into '/var/lib/mock/f41-build-side-1-2774785-32365/root/chroot_tmpdir/scmroot/perl-Test-Spelling'...
$ git fetch origin 9c68ddc49b3e820dc704ffdf47edba7444fc7092:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-Spelling
 * [new ref]         9c68ddc49b3e820dc704ffdf47edba7444fc7092 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9c68ddc Add rpmlintrc