$ git clone -n https://src.fedoraproject.org/rpms/perl-Authen-Passphrase.git /var/lib/mock/f41-build-side-1-3134350-39734/root/chroot_tmpdir/scmroot/perl-Authen-Passphrase
Cloning into '/var/lib/mock/f41-build-side-1-3134350-39734/root/chroot_tmpdir/scmroot/perl-Authen-Passphrase'...
$ git fetch origin 9a3df61ab9cdf1c0e4f9c00586171ebdba21f469:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Authen-Passphrase
 * [new ref]         9a3df61ab9cdf1c0e4f9c00586171ebdba21f469 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9a3df61 convert GPL+ or Artistic license to SPDX