$ git clone -n https://src.fedoraproject.org/rpms/perl-DateTime-Incomplete.git /var/lib/mock/f45-build-22944-595/root/chroot_tmpdir/scmroot/perl-DateTime-Incomplete
Cloning into '/var/lib/mock/f45-build-22944-595/root/chroot_tmpdir/scmroot/perl-DateTime-Incomplete'...
$ git fetch origin c592df166db15d2841f48f24826795f199a6b0a1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-DateTime-Incomplete
 * [new ref]         c592df166db15d2841f48f24826795f199a6b0a1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c592df1 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild