$ git clone -n https://src.fedoraproject.org/rpms/perl-X11-Protocol-Other.git /var/lib/mock/f45-build-27440-624/root/chroot_tmpdir/scmroot/perl-X11-Protocol-Other
Cloning into '/var/lib/mock/f45-build-27440-624/root/chroot_tmpdir/scmroot/perl-X11-Protocol-Other'...
$ git fetch origin 9073adf2d8b5ea25df04491e2aa756d6151e126c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-X11-Protocol-Other
 * [new ref]         9073adf2d8b5ea25df04491e2aa756d6151e126c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9073adf Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild