$ git clone -n https://src.fedoraproject.org/rpms/perl-curry.git /var/lib/mock/f45-build-27648-625/root/chroot_tmpdir/scmroot/perl-curry
Cloning into '/var/lib/mock/f45-build-27648-625/root/chroot_tmpdir/scmroot/perl-curry'...
$ git fetch origin 90a877e10fef7707a0af63418202bd915089ad4f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-curry
 * [new ref]         90a877e10fef7707a0af63418202bd915089ad4f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 90a877e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild