$ git clone -n https://src.fedoraproject.org/rpms/perl-libwww-perl.git /var/lib/mock/f39-build-2323286-58689/root/chroot_tmpdir/scmroot/perl-libwww-perl
Cloning into '/var/lib/mock/f39-build-2323286-58689/root/chroot_tmpdir/scmroot/perl-libwww-perl'...
$ git fetch origin 3503c204790b93219140ef08020161f0443c4587:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-libwww-perl
 * [new ref]         3503c204790b93219140ef08020161f0443c4587 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3503c20 6.74 bump