$ git clone -n https://src.fedoraproject.org/rpms/perl-DBD-Firebird.git /var/lib/mock/f45-build-22702-593/root/chroot_tmpdir/scmroot/perl-DBD-Firebird
Cloning into '/var/lib/mock/f45-build-22702-593/root/chroot_tmpdir/scmroot/perl-DBD-Firebird'...
$ git fetch origin 394343f179996828cf76169f04420c6935392af9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-DBD-Firebird
 * [new ref]         394343f179996828cf76169f04420c6935392af9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 394343f Perl 5.44 rebuild