$ git clone -n https://src.fedoraproject.org/rpms/perl-Tk-Canvas-GradientColor.git /var/lib/mock/f45-build-27210-621/root/chroot_tmpdir/scmroot/perl-Tk-Canvas-GradientColor
Cloning into '/var/lib/mock/f45-build-27210-621/root/chroot_tmpdir/scmroot/perl-Tk-Canvas-GradientColor'...
$ git fetch origin 098fcaee0a6e9a010e896c8d222d35f36b24bc05:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Tk-Canvas-GradientColor
 * [new ref]         098fcaee0a6e9a010e896c8d222d35f36b24bc05 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 098fcae Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild