$ git clone -n https://src.fedoraproject.org/rpms/perl-Crypt-Argon2.git /var/lib/mock/f45-build-22554-593/root/chroot_tmpdir/scmroot/perl-Crypt-Argon2
Cloning into '/var/lib/mock/f45-build-22554-593/root/chroot_tmpdir/scmroot/perl-Crypt-Argon2'...
$ git fetch origin d3fa7c77e3b715252b4ec03c260180b014d82541:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Crypt-Argon2
 * [new ref]         d3fa7c77e3b715252b4ec03c260180b014d82541 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d3fa7c7 Perl 5.44 re-rebuild updated packages