$ git clone -n https://src.fedoraproject.org/rpms/perl-Sub-HandlesVia-XS.git /var/lib/mock/f45-build-26434-617/root/chroot_tmpdir/scmroot/perl-Sub-HandlesVia-XS
Cloning into '/var/lib/mock/f45-build-26434-617/root/chroot_tmpdir/scmroot/perl-Sub-HandlesVia-XS'...
$ git fetch origin 49980ac02f20274873aca17aac83812ec39490c7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Sub-HandlesVia-XS
 * [new ref]         49980ac02f20274873aca17aac83812ec39490c7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 49980ac Perl 5.44 rebuild