$ git clone -n https://src.fedoraproject.org/rpms/perl-Text-QRCode.git /var/lib/mock/f45-build-27029-620/root/chroot_tmpdir/scmroot/perl-Text-QRCode
Cloning into '/var/lib/mock/f45-build-27029-620/root/chroot_tmpdir/scmroot/perl-Text-QRCode'...
$ git fetch origin 0b6e47d935afe16edcd41e61301c66c939b71996:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Text-QRCode
 * [new ref]         0b6e47d935afe16edcd41e61301c66c939b71996 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0b6e47d Perl 5.44 rebuild