$ git clone -n https://src.fedoraproject.org/rpms/perl-Growl-GNTP.git /var/lib/mock/f45-build-23827-599/root/chroot_tmpdir/scmroot/perl-Growl-GNTP
Cloning into '/var/lib/mock/f45-build-23827-599/root/chroot_tmpdir/scmroot/perl-Growl-GNTP'...
$ git fetch origin 77cb6b51ccc21b051cd614397c3d14c6f9c35b24:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Growl-GNTP
 * [new ref]         77cb6b51ccc21b051cd614397c3d14c6f9c35b24 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 77cb6b5 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild