$ git clone -n https://src.fedoraproject.org/rpms/perl-Bot-BasicBot.git /var/lib/mock/f45-build-21887-588/root/chroot_tmpdir/scmroot/perl-Bot-BasicBot
Cloning into '/var/lib/mock/f45-build-21887-588/root/chroot_tmpdir/scmroot/perl-Bot-BasicBot'...
$ git fetch origin 919771f1310a39b2058b88cf057b0db139f896dc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Bot-BasicBot
 * [new ref]         919771f1310a39b2058b88cf057b0db139f896dc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 919771f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild