$ git clone -n https://src.fedoraproject.org/rpms/perl-XML-Feed.git /var/lib/mock/f45-build-27472-624/root/chroot_tmpdir/scmroot/perl-XML-Feed
Cloning into '/var/lib/mock/f45-build-27472-624/root/chroot_tmpdir/scmroot/perl-XML-Feed'...
$ git fetch origin 02864feac299618ed52f68ad6d0f78ecc6a84130:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-XML-Feed
 * [new ref]         02864feac299618ed52f68ad6d0f78ecc6a84130 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 02864fe Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild