$ git clone -n https://src.fedoraproject.org/rpms/perl-Sub-Infix.git /var/lib/mock/f45-build-26412-617/root/chroot_tmpdir/scmroot/perl-Sub-Infix
Cloning into '/var/lib/mock/f45-build-26412-617/root/chroot_tmpdir/scmroot/perl-Sub-Infix'...
$ git fetch origin f84547960f6b99c95fa8629b1ca29b1befdef9eb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Sub-Infix
 * [new ref]         f84547960f6b99c95fa8629b1ca29b1befdef9eb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f845479 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild